Why are there no new Team Arena maps/gamemodes?

It’s been a year since this game came out. Team Arena has the same maps (except for Stasis?) it did with weapons/pickups moved around. Either all the DLC maps are trash or 343 is trash and can’t balance them. Aren’t the pros bored of the same 8 or 9 maps? What a waste of time making the maps if you can’t even put it in your flagship ranked playlist. What gives?