Hey look, I'm contributing my terrible concepts to this thread. <o/
I'd love to see images and a little more information on the games I'm downloading. A couple images taken at different stages would give the user enough information to make the download judgment call. A title screen and 2 or 3 gameplay images would be great. If the game has a Youtube video posted, maybe hotlink the video inside the TIGPlayer client so trailers can be watched internally?
I really think there needs to be at least one image there, though. :D It can be downloaded and cached inside the TIGPlayer folder so that once the user downloads the small image, it wont need to be loaded ever again and should smooth out browsing.
Also, I downloaded Death Worm because of this player... and I love it.
Anyway, just little ideas.
I love the simplicity of using this program, and it has already made me try games I wouldn't have otherwise tried. Keep up the good work!