how about tank getting hit at the turrets "neck" and after that either the turret is disabled completely or you couldn't turn it anymore? atleast that would be realistic, but i don't know if it's possible in bf.
(turrets "neck" = the joint between hull and turret ;) )
I saw a program on discovery onmce and it had this incredible footage of a t34 getting hit. And the hit caused an explosion of some sort and forced the turret right of the hull, it went up in the air for something like 10 meters! wouldn't that be a cool sight if you had that in FH?