To be honest, I have only a frenzy barb, but I would imagine a conc barb something like this (in this order):
- 20 Battle Orders - a must have, your party will love you and the bonus life & mana is just too good
- 20 Increased Stamina - same, life is very important
- 20 Concentrate - obvious, if this is going to be your main attack
- 20 Mastery with weapon of choice - damage, attack, critical strike, everything you need.
+ 1 pointers, like most warcries, Increased Speed, Natural Resistance, Iron Skin, Berserk and Leap maybe
+ prerequisites.
The other points, according what you want, could be spent in many ways. If you want lots of defense (and some dmg reduction), Iron Skin; if you are a party guy, Shout. You could also max Stun or Berserk for the synergy.
I don't know about WW as I have never tried it, not even in normal d2 (yes, I know, shame on me, what kind of barb I am and such
), but it might be good against trash.
Edit: uhh. I read the date as Jul 15, not Jun 15.. sorry for the necroing.