That would be the best combination of realism and gameplay---Tiger was pretty unique, as the actual tracks were turned by a generator. Pretty sure most other tanks had to turn a hand crank. Would help a bit trying to deal with campers
Going from memory here, but the Pzr III and older/smaller tanks used a hand crank and the Pzr IV and later tanks had a powered traverse. Of noteworthy mention is the last version of the Pzr IV, it did NOT have a powered traverse. The most logical reason was the lack of resources I'll bet.
Otherwise, the early we look in WWII the more likely a tank had manual turret traverse and the later we look the more likely it had powered traverse, at least in German and Soviet tanks.
I just checked and confirmed my hunch. The British and the US had powered traverse from day 1. Even the light tank M3 Stuart and Cruiser Mk I, and the medium tank Grant/Lee M3 tank had hydrolic powered traverse. Oh, and the Japanese had all hand cranks.