But in all seriousness.
i honestly feel WM was poorly implemented. the damage doesn't feel any different and although i get fantastic burst with my tweaked opener i feel like i'm suffering more from the fact that i need to stay in the stance if i want to enjoy iron jaws.
my 2 cents worth is this.

WM needs a significant boost in power output and they need to remove the gates on iron jaws and empyreal arrow. i'm fine with empyreal arrow having a cast time, that'll bring about more of a know when to use it situation which is fine.

i'd also like that they make it so barrage has two states. In the out of minuet state it does the original auto attack thing it had and in the WM state it has it's new effect apply since there isn't any autos. this will also make people want to be in WM if they want the boosted effect for Empyreal Arrow damage.

and please SE make it like the other stances and have no cast time. seriously 3 seconds is just stupid.