There is nothing more infuriating in this game that dying, respawning, moving 5 feet then getting bombed or sniped again. The current spawn protection is awful, a few seconds of invulnerability then once you move, bang. Half the time in a RB Ground Forces match if a team gets on a roll from a good start lots of them make a beeline for the enemy spawn often making for very short (and frustrating) games.
A few simple steps to at least discourage spawn attacks.
a 100m square radius of the spawn is a no go zone, all spawning tanks are invulnerable until they move out or fire their gun (they cannot regain invulnerability if they move back in).
Bot controlled SPAA to keep planes from vulturing spawns, if the SPAA dies: a new one respawns after a minute.