Chang's B'Rel, as seen in Star Trek VI. The Excelsior ACC (Anti-cloaked Cruiser) was designed to counter the threat of a Cloaked vessel, but the threat never really went anywhere. Only a few of the Excelsior ACCs were built..'Enterprise-B, Lakota, etc.'. But a modification for the stock B'Rel to allow it to fire while cloaked would truely be 0wnage. I'd also like to see the wings fold up when in green alert..That sort of dissapointed me when they stayed down all the time..When the ship's at green aleart, they're supposed to rise, as seen in 'The Voyage Home'.
I'm pretty sure the folding wings for the B'Rel are possible..They did it on Starfleet Academy way back when..I'm just not sure what would have to be done to the model itself. It seems like there should be some way to have them fold up in the same process that takes the weapons and shields offline.