a) If the race ends uphill, stage or race contenders should never attack on the flat if peloton is big.
b) If one of the contenders is willing to attack on mountain stage, his team should set a high pace before to reduce the peloton. Attacks from big peloton at the bottom of the climb by the best riders should be rare

Explanation:
a) In real life, big favourites never attack on flat from big peloton if the stage ends uphill, because they would be easily brought back by the helpers of other contenders if that happens. In the game it happens too often.
b) I think it worked like that in PCM2010, but in later versions attack from big peloton without team setting the pace before are more frequent. Unless it’s very short and explosive climb, top climbers never attack from big peloton in real life.

Why: For more realistic process of 3D races, which is possibly the most important aspect of the game for many players

Explanations: I once had an echelons stage and riders were crossing the line one by one and the one who finished a minute (!) back was given the same time as stage winner. It should not happen. In previous versions of the game there were some gaps between top sprinters on the finish line, so I understand why it was set that 20 seconds gap was needed for time gap to be counted, because otherwise we would have some weird results with time gaps being counted on a sprint finish. But in PCM2015 finishes are much “tighter” so there’s not a danger of that anymore and the gap needed for time difference to be counted should be substantially lower to avoid situations that groups receive the same time when obvious splits occur.

Also there was a discussion about that on this forum before (I can’t find it so I can’t link it), but there was a suggestion that time should run at a slower rate at the finish line (let it be 2 times slower, excluding TTs where it would stay the same). First of all, gaps in 3D races are too big and unrealistic. This would be a really quick but efficient fix. Apart from that, it would bring more relevance for time trials in big stage races, because now they’re pretty much meaningless compared to mountain stages, because gaps are so big in mountains (or even hilly stages, what I highlighted in one of my previous posts). I believe it’s doable and there’s no need to keep the scale between distance and time at all cost since it doesn’t bring realistic outcome anyway.

Why: For more realistic outcome of races

Explanation: There should be an option to send our rider for a mountain training camp. This would effect in increase of MO skill for a period of time, but also in significant drop of form for a period of time. For example our rider gets an MO bonus for 8 weeks, but for the first 4 weeks he suffers from significant drop of form, then his form comes back to normal. I believe a random factor should be included, so there’s always a gamble if our rider recovers his form in time for his important goal. For this to have more sense, it should be also used by AI and, of course, riders should be forbidden to race at the time which they spend on training camp. Also certain riders could be prone to react on training camps in certain ways, so we can learn with the time what is the most efficient approach to them, but a random factor should always be included.
There could be different scenarios of how the training camp pans out. For example:
Scenario 1: + 2MO for first 6 weeks, +1 MO for another 2 weeks, -15 to form for first 5 weeks, form normal after that.
Scenario 2: +2MO for 10 weeks, -15 to form for 6 weeks, -5 to form for another 2 weeks
Etc.

Also training intensity could be included, so we can chose between less MO bonus and less unpredictable form drop and more MO bonus but more unpredictable form drop.

Why: I guess it’s a thing that could be relatively easy to implement, but would give an additional aspect of unpredictability and realism for important stage races

A Button to show the breakaway group or a rider in a separate window.
Here I got an example:
This speaks for itself. The placement and the size are just to show how I think it could look like.
Why:
If one of my guys is in front I often switch between the groups so I don't miss any important action. With a picture in picture I got both groups in sight and don't need to switch a hundred times in a race. This could also be interesting on a specific rider to spot on.

Idea: Adjust aging, maybe add another factor that let's some riders age quicker and others slower.

Explanation of idea: If you run the game for a few years, you'll start seeing every rider above 33-35 years drop out of top level because their stats deteriorate so rapidly.

Why: Don't know if anything like that is implemented right now, but we need some riders to be able to compete at the top even at the end of their 30s and into their 40s, because that's the reality in the recent years (Voigt, Horner, Rebellin). Of course, most should retire at their mid 30s (or if left without contract for like 2+ years, even earlier), but some should go on for a few more good seasons.

Idea: Make loading screen interactive

Explanation of idea: You gonna bite my head off for this one, but either the loading times should be reduced (probably too complicated) or the loading screen must be transformed. The current rotating one is too minimalist, players should be able to see the sprints to plan the strategy, extra tips or fun facts (earlier winners - with the ones on the starlist highlighted, average age of riders in the stage, their average salary, numbers by nationalities, prizes, etc.), maybe mini-games, like cycling-themed tertris or cycling trivia that awards you with 1 € extra.

Why: Right now it's just the most time-wasting part of the game (especially for those with less capable PCs). I think there even was a bug earlier that when you pressed a button while a stage was loading the whole game crashed. In the current version I can see two or three rotating list, but it's not interactive at all, and it won't keep me entertained for 3-5 minutes that a stage loading might take. It's 2016 - I can not just order a pizza in that time, but it will also arrive before the stage is loaded! No harm there, but it just really can be that long. The key is that the player should be in control - make me push buttons and actually want to read through that data, not just check out the biggest competitors and their teams, because that lasts like 30 seconds.

Idea: Make stages longer (make a km longer to be precise)

Explanation of idea: I'm not asking for realistic sizes, just a bit bigger road particles (+10-20%) or maybe that smaller riders.

Why: To be honest I never checked how long is a piece of a road that counts as one kilometer really is compared to objects in the game (riders, houses, cars), but I'm quiet sure it's rather simplified. I'm not asking for realistic lengths, but it's rather irritating when you are trying to move your rider for sprint, attacking or anything, but he is stuck behind someone and he just can't move for like 500 meters. I know some adjustment was made to this in PCM14 or 15, but it's still not ideal. Long road parts sure wouldn't solve that totally either, but they would somewhat decrease the losses. Also riders at the back of the peloton could make it easier to the front. Adjusting the rider models to be smaller might work as well, but it might look unrealistic then. I guess scaling current stages could work as well, but I'm not an expert on that topic.