Mainly it's a standard 3.5e game - so standard 3.5 feats and stuff. Just with the PF barb instead of the SRD barb. But surprise accuracy was one of the things I thought might be a pretty good power. It's hard to say, though, because you effectively get this 1/day per level, if you spam it a lot and need to save rage points to keep your rage going through 4 encounters a day.
I might just be better off staying away from this class and sticking with the other, more interestingly houseruled classes (the campaign will be core-only, but most of the base classes have some kind of houserule that's more-or-less a buff). Monks get their flurry attacks as a swift action, so you can make a few attacks after a move, rangers and paladins get to cast their spells as swift actions (the standard-action ones), fighters get half their level added to AC and Damage. Who knows, this might be the pathfinder classes, snuck in as "houserules", since it's been a while since I looked at PF. The fighter thing is kind of interesting too, I could see going that way, especially since we have access to PHB2 feats and ACFs (the only extra book we get) except there's already a PC who called dibs on fighter, and I kind of want to balance out the party a bit.
I'm still at the stage where I'm trying to pick a class, that's why I started the cleric thread too. Given that it'll be a long campaign played from level 1, I feel like planning ahead is a good idea, especially since there won't be a ton of PrC options or anything else really to spice up the character. Mostly just flavor, RP, and a good roadmap set out ahead of time. Cleric would help, since everybody needs a divine caster, especially when you don't have the MIC to cover certain holes (ability damage, poison, fear). Just kind of feeling around. I think I might have to wait and see what kind of stats I roll too. If I didn't have MAD to worry about, monk might be kind of sexy, especially a spring attack tripper with 2-3 attacks on the spring for free, and more with stuff like bounding assault.