Are you familiar with the
worldhacks done for FRUA? Essentially, you replace all of the default art and databases with those for a specific theme. They did Underdark, Super Hero and Oriental Adventures worldhacks which are all very well done and useful for all.
If we started with a worldhack, or perhaps the same thing but with a better name
, we could add an adventure as time went on. That is unless someone has a good story idea that the rest of us want to work on now... I'm definitely open for anything.
I say, knowing the folks who are showing the most interest, that we go 1e.