I downloaded the stable 0.3 version with low expectations. I must say how surprisingly far along you guys have gotten with the development. I wanted to express my appreciation at the hard work put in to get to this point.
The geoscape, base operations, the tactical screen, and infopedia are (to a casual observer) indistinguishable from the original, and they are tied together with all the appropriate in-game dialogs instead of just being roughed-in prototype modes. Installation was a snap, I unzipped the package and then copied in the data files from my X-Com, and bingo it was running.
I am excited about the potential for customization and gameplay options once this project has reached 1.0 status. I sure people have suggested things like internet connectivity for cooperative or competitive play, changes to the research tree with new buildable goodies (I want to build a battleship!), high resolution displays (perhaps interpolated using the existing data files), new alien AI rulesets.
I strongly encourage X-Com fans to stay current with this site, as I now have no doubt that this project will be completed.