Spawn protection can hinder attackers though on some maps, LiandriDocks is awful with spawn protection with the way the spawns are laid out, generally using a shock ball to block a spammers combo is the only way to stop them, because if you shoot their shockball with primary fire you get killed and do nothing to the spammer.
Tweaking the self damage so you still don't do any damage to yourself(doing trick shots like bustacell for example won't do any damage to yourself), but if an enemy shoots your shockball self damage is applied meaning spammers will get punished if they are at close range.