Remove the spawn that's together with the flags to avoid spawn killing
It's known that players don't like to spawn and then have to go directly up, you need something faster to put players on the game. Maybe the 2 lower (external) spawns (1 red & 1 blue) could have a ramp or something. That way players don't need to jump and fly, they can jump/run/hop to get really fast on the middle of the map