That's a really cool idea, but wouldn't it be rather hard to code, I mean it's basically a squad of say... 5 men with no weapons randomly being spawned out of a tank, taking a point, while the tank becomes "stunned" and then randomly disappearing, and reactivating the tank. I mean I know u can make animations for getting out of and into the tank, but in my opinion that's just too much work. I have no experience with coding though so if that is doable, that would be sick.
Also you could use the American "Raid" ability, AKA light vehicles can capture territory and make it work for tanks, but that would be just plain boring