Probably mentioned this before but I really wish proper ports of the Sierra VGA games had been released on the Amiga. The VGA game ports they made were some of the worst ports I've seen.
Ideally, I wish well programmed AGA versions would have been released.
EDIT - I just finished Mean Streets for the first time ever a month ago or so. Pretty cool game, I liked it better than the first sequel (I played through all the Tex games).