As for radar, I don't mind it.
But since we're discussing ideas.
What about bringing back Halo 1 and 2's style of Team Slayer Pro? Battle Rifle is the starting weapon, but you actually have normal weapons on the map and there is no radar.
Bringing back Team Slayer Pro and Team Rifles would bring a great mixture to the meh lineup that is currently in Team Slayer.
Remove Team Snipers from it and make the mixup between Team Slayer, Team Slayer BR (lower weight than the three), Team Rifles, and Team Slayer Pro.
God that gametype was so fun on Ivory Tower.