I GV and bomb quite a bit, but have only been playing AH for 10 monthes or so, but heres my .02
Dive bombing heavys-code the dive angle, yes, launch from med/lrg bases only, no.
From a GV perspective, I worry more about A20s, IL2s and B25s, than the lankstucka types. When attacking a base with GVs I am with OLDS, I hit ords first.