I just want to address all the gross misconceptions with in this post.
1. While I do agree to that some of the potency changes were warranted, the main contributing factor to bards being strong was the fact that people had not started to scale yet. This is very apparent from weapon damage numbers, whilst bards only get a +1 increase to their weapon damage other classes were getting +3, and once this scaling took effect bards were no longer top dps unless your mdps were totally terrible.
Hence why this phenomena was never replicated, even though the nerfs to bard were not major in anyway, they are just a class that scales badly.
2. The same is true for every class; player skill is a large contributing factor, I really don't understand the point you are trying to make here.
3. This is such a broad generalization, there are those that complained about damage, and there was others who's main issue was the large change in play style. Regardless the 10% damage increase was not a premature change at all, was in fact very warranted. If this is the skill that was brought into the game to help bards reach more competitive dps numbers, then it should do just that seeing how this is SE's justification for adding WM in the first place.
4. Mobility was clearly the class design that SE was going after, Bards were required to dodge aoe's just like everyone else, albeit they could keep up time on the boss while doing it. AA's will not be missed if you strafe move.
There is nothing wrong with this design choice at all, this made Bards a prime candidate for handling a multitude of mechanics, take a look at T7 savage.
5. I am glad that it only took you two weeks to master the class, I don't understand what relevance this has towards the subject at hand, because as far as I am concerned no class in this game is difficult to play, its understanding how a class plays out within the context of a certain encounter the poses any form of a difficulty.
Nope it takes a Bard main to realize how terrible this design change is, every point you made previously just misses the mark.
To wrap this up a simple solution to the current bard problem is to increase weapon damage by 1 across the board.
Make WM a 120S cooldown that negates the 15% dps loss from songs for 15s.
Make WP a 120S group aoe buff (with the same range as songs)