Im going to chime in with FF7.... everyone has saw so many "tech-demos" and teasers for both the ps2 and ps3, and most ff7 fans would love it.... but they wont do it.

I also agree with zelda:ocarina of time and some 2d remakes of some of the mario games (yoshi's island could look soooo cool now on uptodate hardware, with post-processingbluumeffectxors._