Some adjustment/balance may be needed and the question is just when? Blizzard has said many times that the game is not supposed to play in god mode without top-notch gear.
Hammer + WoTB (100% up time) is immortal with high LS for barb even at medium gear level, and the play is simple too without much synergy by just beefing up in DPS and LS. The critical point is that WoTB is immune to controling effects, which is the only occasion/situation threatening to players of other classes at high MP levels.
Hey I took a look at your gear, it's pretty good. I would say though if you're looking to improve it, more life would not hurt. If you're looking to replace an item, I would chose the pants, but I'm sure you like the MF and GF on them