Here is another take on one of the build you are thinking of.http://us.battle.net/d3/en/calculator/barbarian#bXYQiT!dgS!aYZcab
The synergy you are going for is capping fury for an additional 25% damage. Another synergy you can play off of instead is not caring about Fury at all really and play off the area synergy.
By adding in two "draw" abilities to gather mobs closer to you, you gain another synergy with Brawler, increasing damage by 30% when it matters, which is when you have multiple mobs on you.
So your initial leap will help pull in those pesky ranged guys and group things and increase your damage radius to 16y. Your groundstomp then goes even further out to 24y and pulls the mobs in to you even closer. From here you have the option of an Earthquake if its up, going out to 18y and pretty much ensuring with the two draws that it hits basically everything...or if it's on cooldown, you have your cleave.
I initially removed the Stuns, because while they decrease damage intake, at the same time they also reduce your ability to use Revenge. However, to increase survivability I took revenge out and switched it to Overpower with a 10% per victim life gain. The damage is lower and the radius is smaller, however the draw abilities should ensure a huge life gain and the fact that Overpower can be triggered anytime you want, gives a form of an Oh !@#$ button and should increase the survivability of the build quite a bit along with the basic stun from the stomp
Overpower also gains synergy with your extra crit chance and AE moves (a huge synergy if any crit can lower the cooldown...much less of a synergy if only crits from overpower itself can lower the cooldown).
But in this build, you get 5% more damage than being at full fury all the time. The only place this will lower your damage that you care about is against solo boss mobs, in every other situation it will beat out the max fury buff.
You also get to play off of not having to run around all over the place to get to mobs, you just keep sucking them in towards you, herding them and killing them off with massive ae damage which in turn keeps filling up your life bar.
When you get in over your head, you have Overpower to fill you back up.
But I like your build :) These are just some other synergies you may want to consider.