I've played and mained Bard for for bcob,scob then changing to NIN for fcob and now coming back to bard again for Alexander, and the WM altering the class in my opinion is that now it has a really high skill/macro-management cap to further excel than your other average bards. Compared to before anyway.
It was much simpler back then, just keep your dots up while not clipping too early and spam bloodletter/heavyshot + proc of SS. Now you have to plan a bit out of how one approaches depending on what proc'd (SS/bloodletter, but definitely changes what ogcd I"ll use vs repel/or if a buff is coming up), what cooldowns are coming up and so on, on top of the dodging, moving and mechanic participation. I'd say this job has gotten more difficult if one wanted to strive to be a "good" bard imo.
That being said the play style of bard has changed drastically, definitely true but, still not something that would "break" a job per se. I just move less frequently and the only part I've turned off WM due to movement requirement is A3 tornado phase (no time for dots and need to do damage faster for adds).
With that out of the way, I'd say bards are in a comfortable position as dps number goes, definitely shouldn't be the "highest" damage dealer, much different from its former style but, ultimately I'd say WM was a good buff (in damage perspective) that asks a lot of the player. (skill/planning)