I asked for Wirbelwind long time ago, would be very nice edition to base defense, that or SdKfz 7/1 (SdkFz 7 armed with a 2 cm Flakvierling 38 L/112.5 multiple gun mounting, appearing with both open and armored cab.)
With SdkFz added to game, posibilities could be open to having a 7.5cm version for attacking town (short barrel 7.5cm)
or SdKfz 7/2 with 3.7cm would be nice for all purpose.
Thats 3 versions of the SdKfz would be useful in game.
I say add the 2 cm Flakvierling 38 L/112.5 to manned guns would be awesome.
You'd have a mixed bag of 3.7cm and Flakvierling's defending a field.