I basically only use WM in a situation where I have a ton of adds to mow down. The 20% buff applies across all mobs there, and makes up for the lack of auto attacks since those only hit the main target anyway.

I would like a few things to improve WM without losing the changes SE added:
- Wanderer's Minuet should be instant activation like every other class's stance change
- Iron Jaws should be instant cast, with a 10 second recast, not on the global cooldown

Those two small tweaks would allow a bard faced with 3+ enemies to pop WM, pop DoTs, pop buffs, do a Sidewinder, Empyreal Arrow, then Iron Jaws and then roll into AOE spam heaven.

I also find myself fantasizing over an ability that'd transfer the DoTs from one enemy in a group over to the next one, like Bane, so I could then pop Iron Jaws on it without having to waste two GCD spells reapplying the DoTs, but that's wishful thinking.