Download time was basically the same for the DEMO/FULL versions; 40 mins. for me. The game is definitely worth it. I have found only 1 minor spelling error.
For what it's worth, I think the issue is based upon the file being a massive ZIP file which is most likely already compressed and makes further compression on WiFi downloads basically impossible. I agree that truncating the DEMO to a smaller file that allows a 1-2 hour max playtime might be a better approach. But the current DEMO does give an excellent idea of what to expect of the full game.
Maybe creating an EXE file would be a better approach?
In any case, I would recommend buying the game (it has been excellent so far) and just downloading once.
