[Imp]

I think & may be wrong here the issue with graphics is an age thing sure I read somewhere the younger market values looks over playability 3D is near enough a must for a main stream game. As this by no means falls into the category of mainstream it does not apply really.
Unless you are talking dire graphics to me it makes no diffrence & changing a 2D game to a 3D game is a pointless exercise unless the game is modified to make the inclusion of 3D usefull. I have played breifly many games that are in fact just old games dressed up in fancy 3D clothes & the one consistent thing is they are normally worse than the originals with poor interfaces or cameras that get lost etc.
First Person Shooter with near realistic 3D now thats good helps with immersion & makes the game so long as its gameplay is sound. The big snag & I may be wrong is nowadays it costs so much money to get the graphics to the level the market wants very few games actually have any money left over to spend on game play