I've almost finished hacking together an unholy love child of mechanics, rules and moves from Monster of the Week, The Sprawl, Dungeon World, Adventures on Dungeon Planet, and roughly sprinkled with the trappings of Serenity/Firefly.
It is super duper rough draft and I've only just finished the first run of The Captain playbook. I'll post it when I'm done all the playbooks and the draft. It makes sense to me though, and will hopefully make sense to my group when I'm finished.