First up, get the Stage DB working again. I know coding it is not easy, and rely's on AaB-ern (who you told me does this stuff) having time, but it has been 6 months now. And if it has been fixed, making that clear to all. Also under Season being able to search for Fantasy/Variant, and making anyone able to add UCI categorized races rather than having to ask first then wait.

Secondly is game DB related. The PCMDailyDB is always incredible and the go to DB for thousands of people, which is of course fantastic. And again this is dependent on peoples willingness and time, but some more PCMDaily DB projects. Other PCM community sites have done historical dbs, and if Daily put in the effort i reckon it could blow all historical DB's out of the water! I don't know exactly what year's or anything, as that should be up to the core makers of the actual DB so they keep the quality high. I know the main DailyDB is the flagship of the site, but i can't imagine it takes too much time to make the various updates, or if it does giving some other members a chance to prove themselves. I know people like Jesleyh, haajse and Atlantius are getting very good at making DB's so helping them, or others out, could be good for securing the sites future in several ways as well.

Third is online gaming. Of course this one is hard at the moment with Armada and Track being the only online modes, but if Cyanide do get "normal" online mode working, then some official site games and championships. I know SN would love to get some more online play and i think it would be a lot of fun for a lot of the site. Yes this does rely on Cyanide getting that part working, as they said they would, but at the least there could be some more official Track games or Championships.

I know none of them are as revolutionary or grand as things like the Man-Game, the Stage DB or Fantasy Betting etc. but they are all fairly simple ideas which would add to the site and community in general.
A few other smaller things i had in mind were:
Monthly News. The weekly news never seems to work, but an update of things happening across the site would be nice, and doing it monthly would allow for a lot of new things to happen between editions. It could also include happening from the wider PCM community, such as special stories, stages, DB's etc.
More cross-community interaction. I know quite a few members are active, or at least registered, on other PCM sites, but a lot are not. I know this is the only English language one (well major one) but even it's just having a Topic or section where someone can post interesting happenings. I know PCM France do domes great DBs and especially shirts, while Spain does some great stages, but they are not always found here, and making that access easier could be good. Of course this would require the other communities to be happy for this, but i don't see why not. (of course feel free to tell me if this, or any others, are stupid ideas)
Mostly SN related, but as always expanding the Man-Game would be good. Not a major thing, or new, but something i imagine people would like.
More Sticky Posts. The PCM13 sections havn't been open long, but more stickys! Guides, Tutorials or just generally really usefull threads could all be made sticky. This does happen, but for example in the General section there could be more. A lot of questions are asked often and if they are made into a sticky, or put into one big sticky, then that would help out a lot of PCM players and site users.
Expanding Cafe Pedro. Not really a big thing, but as they fill up more and more quickly with chat and spam, extending them from 100 pages to 200 would be good. Or cracking down more of spam conversations.
Deleting Threads. I know you don't like to delete threads for various reasons, but there are lot of threads that are just clutter. Not saying the Admins should delete them, but giving the users the option. We can delete posts, so why not the thread? We can ask you to delete it, but in the story section for example it couldn't hurt.
Add a Story/General section to the Tips and Ticks.
Add a Search Function to the Private Messages. Or just a way to filter or organize it. It takes way too long to find various messages or even mass delete.
Embed from Facebook.
Finally, revise the status for number of posts (the writing related to your number of posts i.e Stage Racer, Sprinter etc.). A lot more people are becoming a lot more active, and as time goes by the overall number of posts goes up, so perhaps readjusting this could be good. Of course hardly anyone cares about it, but it might be nice... like a lot of my other ideas...

Again sorry for that being really long. No major big ideas, but plenty of small things i think could make the site easier and more fun to use.