Thanks a lot everyone for all the comments and criticism, I'll give you guys some info about pretty much everything when I get back home.
I gotta say Redline4 hit the nail right on the head, the china's pretty much the same all the way through, for some reason the band was complaining on how it sounded "different" all the way through due to humanizing but they were very happy with it this way, I think it's pretty much the only think I don't like about the mix.
I gotta say I love slappy kicks, but I removed some 2.4khz with a rather wide Q, and boosted a tiny bit of highs instead. Actually come to think of it I removed some 2.1 to 3.5 in pretty much everything depending on what it was (OH/room/guitars/kick/bass grit) and it's sounding much more open and bitching and now the vocals really breathe more into the mix.
And you guys won't believe this but the guitars strings were kind of old (told the guitar player to change 'em, he came back 3 minutes after and I didn't noticed they were old after we tracked a second song haha, I liked the basic tone we had anyway so I went along with it).
I really hope some of you check out the updated mix when I'm gonna put it up, this is REALLY shaping up to be my best work to date, thanks to your help of course.
Edit : Didn't see your answer Julian, that's good to hear, I had all the drums stemmed out though (crap 2006 computer haha) but I should have the time to work on the original MIDI and redo the OH's compression, I agree that many transients sound rather squashed. No entire drum bus compression, the more I work on songs, the less I feel it can be useful to the way I mix.