DEMA  There is extensive discussion regarding Quinn's randomness at the following link...

http://simonhaertel.de/forum/index.php?topic=102.msg526#msg526  
(Version 3.5.2)

DEMA  If you are looking for an eye-candy app short on features and long on hype -- grab Delicious Library.

If you want full-featured, well supported, powerful apps, look no further than Bruji and the *pedias.  
(Version 3.4)

DEMA  Michael,

Regarding the Wish List:

1) There is no way to save a game for future use, but if you have a really good set and want to play the game again, you can select Game -> Repeat Last Game from the menubar until you quit Quinn.

2) From the Quinn Help: "If erasing the lines leads to an entirely empty board, the player gets a special bonus of 4444 points times the current level number."

3) You can set the edge snap delay to any value between 0.1 and 0.4 seconds (or "Never" if you don't want the pieces to snap) using the slider in Quinn's preferences (Quinn -> Preferences...)

Also feel free to drop by the Quinn Forums (simonhaertel.de/forum/) and post others suggestions etc.  
(Version 3.4.5)