Brief thought about Apocalypse World:
There's a division in AW. Does:
* The primary conflict comes from the outside, and drives the PCs to bond with each other?
* or the primary conflict comes amongst the PCs, and the external forces serve to apply pressure, if needed
For the basic playbooks, this isn't such a problem, but some of the extras (the Show, f'rex) rely on the latter mode of play.
Inspired by a game at ACNW, reading "the contaminated" draft, and M<3s, ofc.