There was one dude in that thread who asked for Halo 5 to have a 32 player max.
There are a few people here who think the same, no? As long as the core game stays at 4v4 (or is it 5v5 now?), then it shouldn't matter if BTB is 32 player max. Worst case scenario is that they'd need to start splitting maps depending on game mode (think Battlefield)