Just a thought, and might have been discussed already. There's this mod statistics mod, which is usable for mod authors, but I suppose if the data was made public or at least accessible by Squad, it'd tell them a lot. I mean, if practically everybody's using some mod, they might consider making something similar for base game. That said, given how good work they've done with KSP, I'd rather have them not listening too closely what people wish. Now it's still consistent and a great product as-is, and those who want to have something different can use all those excellent mods for it (esp. with coming 64-bit version) -- I mean, I have 20+ mods that I use at the moment, but for some reason I'm happy that they are all mods, not part of the game. With the exception of TriggerAu's excellent alarm clock, without which I wouldn't be able to have those 10-20 simultanous flights going on at the same time.