@Bananerz
It gets so expensive to raise any stat once you've invested a sizable chunk of XP into a character. Arx is designed for masterful specialization, or jack(ass) of all trades. You can't be 'the best' at everything, but you can certainly be fair-to-middling at a lot of things. It's up to the player. Not sure what you mean by no realistic costs for actions with consequences, that doesn't seem to happen now and I don't see how or why it would suddenly start happening later.
I hear so much about how terrible it is, all the social classes mixing together with wanton abandon, but you never really see anyone make a fuss about it IC. Make a nobles only restaurant if you want exclusive RP (class exclusive, not player-clique exclusive, it's not the same) or strong-arm commoners into etiquette classes and teach them how to curtsy, sip tea, and stfu in the presence of their betters (YMMV but some people who play commoners do like this sort of RP, my etiquette classes on Firan were always full). Be the change you want to see.
Cliques are a part of life. We have them at work, at school, and on games. If you're not part of someone's clique, why does it bother you that it exists? If you want in, make yourself appealing to those cool kids. If you just think 'they think they're so cool', let's not be five years old about people having friends. @Apos hands out plot pieces like free candy (no seriously, just show up and actively RP and you'll see what I mean) and anyone can run PrPs so it's not like being outside of any clique will limit your RP possibilities unlike in many other games.