I’d love to hear from anybody who tries BitD via play-by-post. It’s likely too soon, but I’ll be curious what works well or less well.
Possible Pros: Since players choose positions/actions/effects, I can see that being a smoother asynchronous conversation than waiting for GM to call for specific rolls and then spell out outcomes. Tracking character and crew stats, advancement, and upgrades should be no trouble.
Possible Cons: Soliciting devil’s bargains may be slower than at a table, but also likely juicier since everyone has more time to consider good options. Likewise, negotiating how to pass point will likely slow down new teams until they can trust each other to pass point to strategic players without negotiating.
What else?
While I haven’t played BitD via play-by-post, I’ve played several Dungeon World games that way. Because games that branch from the PbtA system are more story driven, there’s a lot that lends well to play-by-post, but I also find that the biggest con is that you really lose a lot of that conversational stuff I love. What would take 20 seconds of back and forth at the table takes 6 to 8 posts of seemingly insignificant exchange. It’s what I miss most about playing games at the table.
The devil’s bargains could be done in an OOC stream parallel to the actual play, probably being mixed in with the rest of the OOC banter? ^^;