I've been seeing posts about bards having pretty good numbers in final coil, might want to search on that. Critical hit is an insane stat for them with the current ilvl of gear. Top endgame raiders are pretty satisfied with a bard's dps output.

Also, when checking dps numbers, don't just look at the base digit gap.

Eg (random numbers only):
1. 2.3
400 - Mnk
300 - Bard
Number gap : 100
% gap : 33.33%

2. 2.45
1. 2.3
500 - Mnk
375- Bard
Number gap : 125 <-- makes the gap seem more bigger each patch but the % may actually be the same
% gap : 33.33%

As of the moment, there is no need to make the dps gap smaller.