Are you talking about the actual shield in particular or perhaps the base that emits the shield?
My only gripe with the shield is that it uses a general model that's based off the domes atop the ISD - and the domes are radars, not shield generators. Other than that, no.
Other than that, I'd like to see an experimental setup where the shield doesn't go away when the player dies, but rather goes away after a set duration of time unless powered by a generator.
"One of the bitches actually gave birth while she was attacking, and her puppies joined in on the carnage."
--the awesomeness that is Boatmurdered.