If I had to guess, we'll be receiving a kinda-sorta-not-really even distribution of modes across Warzone and Arena, e.g. Grifball (and by proxy Assault) & Warzone Bomb coming out concurrently.
Could be.
Grifball has more in common with Ricochet than with Assault. In fact the Grifball community abandoned the built-in Grifball variant in favour of Ricochet within months of it's release. Wouldn't it be ironic if the community had to reverse engineer Assault from Grifball this time around?
Grifball and Infection alongside more conventional slayer types like Shotty Snipers and the like would make a good Action Sack playlist...
I can't see this happening. Both the Grifball and Infection communities would be infuriated if their variants were diluted and buried within another playlist. When people play Infection in MM they want to ONLY play infection.
The only time this has been successful was when two Grifball variants were folded into the Halo 3 Action Sack post-sustain graveyard playlist.
Infection and Grifball should be regular and permanent Weekend Playlists to see their highest populations. Action Sack should be a regular playlist.
My ideal weekend rotation would look like this:
Weekend 1: Waypoint poll, as they do now.
Weekend 2: Grifball
Weekend 3: Cartographer's Community Forge Showcase (more on this later)
Weekend 4: Infection
For the rare month with a 5th weekend (2016 January, April, July, September): HCS Playlist