Creating a game server for 0ver 100 players is very difficult
I'd just imagine that you'd be able to create a type of sub-server to reduce lag instead of throwing 50-100+ people into one match.
The number of players using a headstart is so low that they are not worth mentioning.
Then that brings it back to my original point. Remove them altogether? They're rarely being used and it's nearly impossible to get one seeing as people get kicked from the gamemode for no reason whatsoever other than getting the short end of the stick.