One thing that I would love to see is a ShipWorks set.  There's hardly anything out there for paper ships (believe me, I've looked!), but I think there would be a good market for it!

- pirate ship
- galleon
- rowboat
- sailing boat
- junks
- dhows
- ironclad
- docks
- island tiles
- cannon props

I for one would definitely pick up something like this!

I'm not sure how practical the idea of "island tiles" would be, unless you're suggesting abandoning the current scale of Worldworks, but I am also all for the idea of ShipWorks.  

I don't know how "modular" they could be made, but there is a certain amount of modularity one could add...for example, a "pirate ship" is really just one of the other ship types with a page of different "extras"...a new flag, a few decorative bits, etc.

Re: Island Tiles - I'm just thinking that the Masterboard could have tiles that were half-water, half-land so you can make a shoreline.  If Denny were feeling particularly adventurous he could make raised, slanted bits of terrain that could be made into modular raised shoreline bits.

Re: Ships - As for ships, I think you can simply print different sail, mast and body types to create different ships.

I'm running an intermittant D&D Freeport campaign (from Green Ronin publishing), so a Shipwork expansion would be perfect for it!

Its a great idea! Without firmly saying, "I'll do it" I would have to say...ITS ON THE PRODUCTION SCHEDUAL! ...lol. You guys rock! I just hope you can wait for me to catch up with your vision.  :D