yeah the change in 4 from 3 sucked and you're crazy if you don't fine so too. hell you couldn't even simply jump backwards like normal games (not saying that jumping backwards is some life saving move or anything, but where's the freedom damn it)as for jin...i hated jin since my bro used to use him all the time, so i had my laughs in tekken 4. i actually use jin in tekken 5 which plays like tekken 4 jin he isn't that bad imo
i woudlnt say his tier raised at all, since he was already top tierand the change was ridiculously drastic, they said he dropped the mishima style because he hated kazuya and gramps so much yadda yadda, but then he also dropped kazama style AND he dropped all the moves that he himself added to mishima style, that made no sense.and yes omfg the wall abuse in 4 and 5 is ridiculous. but even more so is the over reliance now on juggles as the only form of competitive play.basically all tekken has become is a race to see who can launch a juggle first thats it. catch a man in a launcher and the round is over basically.