I think the class looks awesome. I really like the class abilities like Rampage and Swift Charge. The rider effects from the Rage powers are interesting, too. Also, it's nice to have a striker that focuses on two-handed weapons (at least that's how it seems to me).
I think they could do a better job with incentives, though. Right now the class has no reason to stay with light armor besides speed. I've played a fighter for about three levels now, and I've never had trouble charging with only 5 move.
The rage powers seem like they would be better as daily Utility powers, but PCs don't get Utility until second level, so I can see why they made them daily Attack powers. I'm worried that people will continue complaining about Rage Strike (seems fine to me; it does what it needs to do to make daily Attack rage powers work for groups that don't have many fights in a day), so that probably needs to change.
Adding bonus damage for charges would be neat. Maybe put the striker damage bonus on the charge to promote that. The at-wills are crazy good; I can see a lot of half-elves taking a barbarian power for Dilettante. Howling Strike and Recuperating Strike look fine, but Pressing Strike is nuts. It's Tide of Iron and double Nimble Strike in melee. I know the at-wills are supposed to be better because they don't have striker bonus dice as a class ability, but Pressing Strike goes a little too far, imo.
Well, those are my initial impressions. I think a lot or all of it has been said before, but I figured I'd add another voice to the choir.