Mountain (MO) / Hill (HIL)
This is definitely the biggest change in the physio engine. There are no more (hidden) coefficient for each stage which says how many % of MO and of HIL will be use to get the rider's hill value for the stage.
Now this all depends at each power do you ride : if it's under 70% of slider and it's climbing then your effiency depends of the MO attribute, if it's above 90-95% on the slider (and climbing) then it all depends of the HIL attribute...and between those two extremes it's a ratio of those two attributes (the more you are close to 70% on the slider the more MO will be important).
This means that depending on the scenario of the early part of the race, an hybrid profile could lead to different style of winners
On this profile it means the long HC climb should be more interesting for pure climbers (because on long climbs you cannot sustain a very high power all the time) while the end should be more interesting for puncheurs : they can make a big attack on the final hill if they're still in the group.
Before (PCM15 & older) it was a unique coefficient that was set for the whole stage so if it was for instance more a HIL stage it means that Gilbert was more efficient than Froome all the way even on the long HC climb.
At the moment it's still « Work In Progress », for instance we're not yet sure about how we'll change the HIL attributes for climbers (at first it was : ok they need a big downgrade and we made some tests with that but it didn't work properly, but now it's more like keeping the same values as before...well it's not yet something properly defined atm).
Please note this change a lot how you manage your riders, before it was quite easy and you could play the same with all the riders but now you have to understand that on very high power a rider with high MO and a bit low HIL will not be great, so maybe it's more interesting to play more smooth with him altough with a rider
Or you could arrive at the end of LBL full of energy with your skinny climber but that won't mean you'll win the race because on the last short climb (Côte d'Ans) you have to produce a very high effort to win, not exactly what is a climber's main weapon you know.
Resistance (RES)
The more you have the more red energy you get.
It is important for riders able to make one big attack, i don't talk a 36x19 attack like Contador, i mean big gear like Gilbert, Sagan or Van Avermaet, so it's good especially for the puncheurs. This is not really where the pure climbers excels, they can make the difference but on a lower acceleration in the end of a long climb.
At the moment only a few riders have been updated.
Yellow bar/energy
Now you have a maximum value that can decrese during the race. The more you use yellow bar during the race the more your maximum will decrease.
The UI is « Work In Progress » at the moment, so when you see some « blue » on the bar, it shows the maximum you can get. No matter how long you recover if you see some blue on the bar you'll not be able to get more than this limit !