So, I booted it up quickly to try it out. The additions to the Minigames menu ('Teamkill: -1 point' in the Scoring section, etc) overlap with other controls, but the rest of the UI was fine. I can make and join teams. Team spawns, anti-friendly-fire, team chat, uniforms and equipment all worked. I have ZAPT installed, that one has never conflicted with TDM. Rotondo's zombies nearly always broke with the anti-friendly-fire.
Hole bots couldn't be damaged - I guess they're different enough from 'players joining minigames' and vehicle spawns that they don't count. That might have caused enough Help questions to get it banned.
I didn't test anything like loading team-spawns from saves, that might have also stopped working over time.
I'm pretty sure Slayer does all that while being a bit more compatible than something from 2010, though.