I have long dreamed of a fantastical, island-hopping roleplaying game "project", akin to the beloved Ray Harryhausen sword-and-sorcery movies of my youth filtered through something akin to old school Dungeons & Dragons.
The exact flavour remains undecided, but I already have a campaign format in mind.
I want to emulate the very first campaign that Gublin and I played back in the late '70s: a picaresque nautical yarn in the style of Sinbad The Sailor, The Odyssey, Jason & The Argonauts or even Clark Ashton Smith's The Voyage of King Euvoran, with the player-characters as the crew of an exploratory ship sailing from mysterious island to mysterious island.
I've long said my campaigning Holy Grail is to run an open-ended 'forever campaign' that captures the spirit of the first generation of roleplaying campaigns (e.g. Gary Gygax's Greyhawk, Dave Arneson's Blackmoor, and my personal favourite: Dave Hargrave's Arduin).
Maybe this is the adventure that will steer me in that direction.