Here are a few suggestions --
The Dragon Ships coud be used for Elf Warships as things continue to expand onto the oceans of Chronopia or for a crew of Renegade Dragon Clan slaves who have revolted and now act as pirates against the their oppressors/all races on the sea. (The Ghost Monster ship from the Dragon collection looks fan-freakin-tastic) They could also be used for the Cereleans from Cerelean Mists if it ever appears. If you have a ship or two and do not plan on hitting the high seas I might know of someone who would be willing to do some wheeling and dealing.
Several of the sets would provide towers/ramparts to assail and at least one -- the Odaku Armory could double as a Mishima setting. A lot of the Fore and Ice sets would look good combined with the Heroscape ice terrain. I could give you bettter advice if I knew what sets you had so that I could google the specific sets and get the creative juices flowing.
