The Flakpanzer 1 SPAA event vehicle which could be obtained before the merge some months back, it has two Tanker 1’s one for Driving and one for Shooting. The vehicle is perfectly able to do its job, however it is easily destroyed at any BR regardless of weaponry and Anti tank. Being so vulnerable, the usual tactic is to stay away and aim the general direction of soldiers to not get sniped, but this usually also ends with you losing a Tanker and only having one left, usually then making so you’d have to depart the SPAA.
To help the survival and usability of this SPAA event vehicle, i suggest adding a third Tanker, there’s obviously a seat between the driver, why not add a Loader to the vehicle or just a additonal Soldier life incase your turret get’s shot. The GAZ-MMM SPAA you could also earn not only has twice the amount of Tankers, but also has a Loader that you can give a perk to reload faster, which the German Flakpanzer 1 lacks.