The only problem with porting PC games to the Amiga is that many people still using Amigas have PCs anyway and can play the games on their PCs. That's what I do anyway.
I'd rather buy new Amiga games which are more like the classic games of old - small, fun and innovative.
Wouldn't it be possible to learn from the mistakes of countless Amiga games and now produce decent games in each genre and sub-genre? Or is the creation of a great game something that doesn't work that way?
What I'm saying is that I've rather buy Paradroid 2001 with sprites and parallax scrolling for my Amiga, than Soldier Of Fortune or Heretic 2 - which I've already played on the PC.