I ran this for five players and we had a great time - we played online and i modified one of the playset miro boards so we could do our own setup, really appreciated that you have created such good online tools for the game. If not using a playset, budget in an extra 45 minutes to an hour for the setup phase, we went for about 4.5 hours total including a couple of breaks. It was such a good game; we decided we were elves living on a floating city above a flooded world vying for control over the trade routes and skyships with our jail buried in the depths of the sea, and we tore ourselves to pieces so efficiently the Knife barely needed to do anything.
The only bit I initially had an issue with was using the cards online, since my brain had difficulty with the idea of mapping them to a normal deck suggested in the online play tools and I wanted people to be able to read their own prompt cards. I made a playingcards.io room with all the cards uploaded into it and I think it works pretty well - happy to share if you would like it.