I've seen people on both sides of the fence about the biggest elephant in the room, which is swapping costing gauge. The thing people seem to fail to remember is that yes, Pld and Drk have to take a GCD to swap stances, but they have complete access to their toolkit regardless of stance, (Exception is stuff like blood weapon for drk, but that's a CD more than an ability). Warrior needs to stance swap to access various moves, so having them be penalized for utilizing the heightened skill ceiling of war is just silly.
Onslaught costing 20 and doing 100 seems balanced around the fact it's got half the CD of plunge. So in theory it's the same dps gain as using plunge, sometimes more, but the cost is silly. I don't think it should generate gauge but at 100 damage and 15cd it'd be just as good or slightly better than plunge. Which is why I'm more of the persuasion to make it 20 sec and keep potency but not cost gauge.
Zerk needs a buff cause it's kinda silly it's worse than Fight or Flight... And infuriate should be usable outside of combat but they can change the gauge where after 30 seconds the gauge drains at like 5 a second to prevent them from chain infuriating pre-boss pull to have war start at full gauge. Works thematically as well since being able to sit on gauge seems odd given Warrior's lore but lets them still be unaffected in combat or doing dungeons since pulls aren't 30 seconds apart.
Course the other thing is they probably don't want wars to be dancing in and out of dps stance which is why inner release and unchained share a CD as well as why it costs gauge to swap but like... That completely contradicts what we love about the class and why warrior players play warrior. WoW already pulled this shit with warrior before and it's why I quit the game. Don't undermine stance dancing, the core reason many people love warrior, for the sake of tank homogenization.