I never did GV's before the update, so when I tried it, I wasn't blocked by some old reflex. Took me 5mins to figure out everything and figured the gunsight underway. In the panzer I found it a good idea to preset range while underway. 800yds seems good enough of a starter for AP rounds. Anything closer is easily compensated for given the very flat ballistic ar this range and It's good up to 1200-1300yds without too much fiddling. Beyond that, it reduce the time needed to adjust for longer range since your already closer. For HE round divide whatever range you had for AP by grossely 1/2.
Looking around is so easy it's almost too easy. Find target in commanders view, wait for turret to traverse and hit '2'. And tgt is right there.
My .02$