Very much love the last 2 ideas: getting a sudden AT squad to avenge you tank seems a little unfair: you kill an enemy tank, and pow you now have an AT squad that can STILL counter you, yet you cant hit as well. The first one seems a little redundant, as vehicle squads start out usually really depleted, which should counter the auto repair.
the other 2 ideas are sweet: you can top off a depleted squad, or run back and get some bonus for another vehicle: if you could give more manpower back for crews with higher veteran that would be even better.