To start off, I just want to give my opinion on all the Halo games. My favorite multiplayer goes to Halo 5. My favorite campaign and writing goes to Halo 2.
But for big team battle, my favorites are Halo CE, Halo 2, and Halo 3.
Halo 5 warzone and BTB is not as fun to me as the first 3 games BTB. Reach and Halo 4 also failed in BTB in my opinion
I am not completely sure why. My guess is that the maps, power weapon spawns, and starting weapons for the first 3 games made BTB more enjoyable.
So for Infinite, I think its best to emulate what made BTB so great in the original trilogy. 4v4 bot slayer and pvp was very good. But as Halo 5 has shown, that does not mean a fun BTB.