Good Job, hopefully it will get some serious attention. If I may copy/paste some ideas I posted a bit ago on another thread on possible ideas on how to improve warrior.

Steel Cyclone: this used to be like our bread and butter back in the day in 1.0, now its pointless use of wrath, to make it more useful/engaging change it to the following options:

2 wrath stack: 150-200 aoe dmg like it is right now with an enmity modifier (our version of flash so to speak)
3 wrath stack: 200 aoe dmg with +5% crit or dmg bonus for a duration
4 wrath stack: 250 aoe dmg with a 50%? heal according to dmg
5 wrath stack: 250-300 aoe dmg & -20% dmg taken for a duration

Just a random idea and it may take some tweaks and/or reverse the orders or w/e but at least this way there's more options according to situation and steel cyclone is useful in current situation as Wrath is precious to us right now.

Or like someone mentioned:

Heavy Swing > Overpower > Steel Cyclone Combo would be great.