Are you on crack? I think the have gotten much better.
They have gotten much
prettier, yes, but that does not equal better. I don't have half as much fun with Halo 2 or Doom 3 as I do if I fire up Duke Nukem 3D.
There's an initial wow factor with these newer games, I'll grant that, but once that passes there's just something lacking in many of them (not all, of course, but Halo 2 was one for me and there are many others). Essentially, I miss that thing that in old game reviews was represented by the 'gameplay' rating. Graphics, sound, cool weapons, it's all for nothing without that. Plot helps, but even that can't save it on its own.
It's one of the things that keeps FS2
retail on my list of the best games even today, and all the SCP enhancements really would be for nothing if the original game didn't already have that something that kept you thrilled for hours on end. Of course, noone would've bothered spending all that time making those enhancements if it didn't have that, either.
So basically, modern advances can improve a game that already has good gameplay (as the SCP has done very well indeed for FS2), but it can't really do anything for one that lacks it no matter how much bling you cram in.