I'm enjoying the format I've developed for the TNG-era expansion I'm working on, in the Bourbaki Basin. I should be playing some games with it over the winter, too, so I might post a Battle Report up here.
I can easily see expanding my format (with its photo-rich, counters-for-playing style) to other player-created settings. The only real requirement is that I'd prefer to work with settings which have some easy way to obtain pictures I can format for the creation of counters. Once I finish Trek in a couple of months, is there a setting you'd like to see worked on?
I've toyed with doing the Sins Of A Solar Empire factions and their ships, or a Star Wars ship collection. The main problem with doing an entirely new and original setting (like MurtalianConfederacy's great stuff) in the format I am using is that I don't have the Illustrator, freehand drawing, or 3d modelling skills to create the ships myself, and my format at the moment gets most of what I like about it from being media-rich.