Alright, let me clear some things up. To begin with, I wouldn't say c9 was removed from mod because of spam as much as he didn't want to mod anymore.
Next of all, +skills do not benefit barbs as much as items with resist, fhr, dr, stats bonuses, life, r/w speed, and especially ds, cs, cb, and ow and I'm sure I left stuff out. Plus skills are pratically useless.
EDIT- if you dont believe me, I would like to duel barb vs barb with you.
As far as skills go, WW is usually better than concentrate in pvp since it hits so damn much. Conc is far too slow, and you can get stun locked and what not while using it, though it does add nice defense. WW is best with a s/s build, so that's what I would recommend.
For skills, I'm doing the same thing as I did in 09 since they're aren't really any drastic synergy changes that need to be recognized.
Max master (sword/axe preferably)
Max WW
Max shout
Max bo
13 (with items) on inc speed
1 in nat resist
1 inc stanima
1 in battle command
1 in prequist.
1 in zerk
everything else in iron skin
stats
str enough to use items, dex look at the formulas, everything else in vita
if you're poor, you'll never get the items so i wont bother right now