Yeah, I REALLY noticed that.
I got the tropper up to 13 and noticed the difference between Mortar volley and DFA. It is there. Not so much of an issue in questing, but in PVP it is bad.
Also noticed the Full auto problem as well. Sometimes it just seems like its not going off.
As to the person who said I was trolling about it being a "mobile" DPS I certainly was not. Maybe because Im not 50 but I run around constantly on my BH shooting the instant cast missles and rail shot when it procs. Once Im clear I'll do the channled blaser shot (cant think of the name at the moment)
While certainly not in the vein of an operative or the smuggler version of it, its not like you have to sit there, you can do damage while moving, get clear, and find a spot to open up.