If you're fighting at the enemy spawn within one minute you're a fucking lame spawnraping cav and don't deserve to do any damage.
I think you've misread my post. Sorry if I was unclear. ^^
I was saying that if something like this was implemented it should only be implemented for the
game-starting spawn where the entirety of both teams spawn at once, as opposed to during
the re-spawns which take place in siege games.
I believe to be obvious the issues that would arise from temporarily invincible troops spawning
around say a flag.