Uh...Nah..I thinking more like a Infantry/Tank battle...The tanks automattically respawn at the Carpool ( Building closest to the bridge. )
Oh, and the Turrets are destroyable, but can be repaired..Along with the..Basically..a Pillbox..The Beacon Superweapon idea was from Renegade...I'd make it so it can be placed on a beacon..and if not disarmed by the engineers...Destroys the entire base, and automattically forces a win, BUT...Destroying the enemys buildings has the same effect...Which is why..By the way..Why I never mention Artillery for this one.
But yea..Infantry/Tank battles i feel would be rather interesting..and a Tank only world would also be nice. =p