Yup no need for frenzy when u can get a couple bashes in and increase ur dmg by a large %. I dont use wotb usually, i use it with my HoTA build, but before 105 hit my dps was so high i couldnt sustain it.
I like the ability to avoid any CC effects with it but just like any class, ive learned to dodge them by moving :P
Anyways Just keep the build u got and swap frenzy for bash like sovereign said, and if u want like i like to do just drop wotb for OP killing spree.
Thats just my preference since i rather have that extra crit up 24/7 rather than wotb up almost 24/7 depending on the MP
You can try the 100% CHC HoTA build which i love but thats just for soloing high mp imo and u need high LS and insane dmg with great survivability to pull it off. I use this build for farming keys.
When it comes to ubers, nothing beats the old double nado build, u need that mobility and u need those nadoes landing crits for ya while you ww ur !@# off
As for grinding lower level MP for XP and items i recommend switching up builds often enough to keep you entertained and not burnt out, but not so much as to get into the habit of running different builds in patterns, you wanna stay away from patterns and try and enjoy the game as much as possible so you dont burn yourself out
If your like me and you cant get bored of your build, i love using the weapon throw build using fury reduc on belt and ring, or ammy, and then using different runes, switch it up a bit. I always keep everything from my normal build which i guess ill just link at the bottom...
But for the weapon throw build just swap out sprint for weapon throw, ricochet for quick runs, dread bomb for higher level stuff, u can keep wotb up 100% just as easy as hota using dread bomb, or you can go for the simple damage bonus of the first rune that a lot of ppl like to use, then just swap out wherever WW normally is for what ever you fancy, sometimes i like WW but most of the time i run sprint there so i can still get around fast.
One last note about dread bomb, keep in mind ur gonna be using the passive no escape along with into the fray which both give u a chance to get 14 or 15 fury back from a crit so if ur chc is high enough u can wind up with like 30 fury for one dread bomb, and having it cost 1 fury is amazing. Dont get -10 total fury cost on weapon throw tho from what i hear the animation wont work and u wont throw a thing *shrugs*http://us.battle.net/d3/en/calculator/barbarian#aUQkRh!ZYV!bZZcYZ