Well tbh I'm not sure of drg has what I could consider "better burst". More like we blow our wad earlier than monk. A monk still have perfect balance up their sleeve if any one would get "burst king" title wouldn't that go to bard with a barrage up their sleeve? Everytime I see a fight I always see BRD for the first little bit way up there in damage, usually top. Also in terms of just burning something down brd > smn ~ drg ? Seems about right if we are just blowing all GCD to kill something quickly.
The final reason why drg should get buff is if musketeer is BLUNT damage and is a dps class. If this is the case there will be like almost 0 reason to bring a drg lol, unless you plan to do something like.... Drg, mnk, brd, musketeer. In which case would be like... why? When you can bring a smn who will do more damage anyways! Also, consider the dagger class as a slashing class too. A good warrior will keep the slashing debuff up as well, meaning another reason not to bring a drg along if you have 2 tanks.
Granted outside t6/7 my group runs 1 tank meaning we only bring a pld to tank our stuff. However, the norm is pld/war thus if monk > drg and musketeer <3 monk this means we will see something like... these comps.
pld,war,mnk,gun,dagger, brd/cast, healers for 2 tanks
pld, mnk, gun, dagger, brd, smn, healers for 1 tank
Hell my drg is i108 and if musketeer was blunt and dagger slashing... I wouldn't bring myself along to make the best comp XD (either way I'm probably making drg the third class I play once dagger class is live)