Given Reach's direction under 343, their philosophy is trying to please as many people as possible, so this is a likely set-up for Halo 4.
However, as we have seen from Reach, there are downsides to trying to please everyone. As I said earlier, having so many playlists makes it harder to pinpoint problems in each playlist, not to mention maps and gametypes. The more playlists you have, the more segregated everyone is, and the smaller the populations are for each playlist (unless you have a huge population like CoD). Will we have BTB Classic and BTB Loadout? Will we have BTB Classic Objective, BTB Classic Slayer, BTB Loadout Objective and BTB Loadout Slayer?
It's hard to criticize for something we know only vaguely about, but on the other hand, it's hard not to worry about it.