Wow! The premise is great. Getting it all in to a 1 pager is amazing. Players rotating in and out of the various roles is such a cool idea.
The head octopus taking turns repeatedly until they either choose to give up the position or the other octopodes start giving their dice to the crucible of doubt to force them out is an inspired piece of design that feels really reflective of a chaotic bunch of cephalopods. Alternatively, finding a way to negotiate between the various players what the head can do to take actions that move multiple octopuses closer to their goals seems like a natural progression of play. Either way, giving all of the octopi dice on every turn is a great way to alleviate any frustration that might come if a player stays too long in the spotlight as head octopus.
Great game!