I don't know much past the Trooper Commando build but the main reason I'm playing the Assault Spec tree is for warzones. I enjoy applying the dot's as a defensive tactic. Without the dot's prevention of caps, then I'm back to gunnery, zap, zap, zap, bang - zap, zap... you get the picture.
I understand my enemy may be frustrated by this but as mentioned before and with good teamwork there are purges that can remove the dot's. I'm certainly frustrated by my enemy's ability to stealth while I'm shooting at them, keeping me cc'd, interrupts and generally burning me down in 3 seconds; but alas, I don't see any changes for these on the horizon.
The dot's seem logical to me in that it would be difficult to focus on planting a shaped door charge while on fire.
Anyway, I guess I wouln't be opposed to a shorter dot duration if it applied the same damage but Bioware, please don't change the overall system. You will only "dumb" the game down and there are counter systems already in place to mitigate the dot's.