Despite remakes/remasters always being based on the original pair of a games for a region people keep expecting things from the third game for some reason. Like, agree with it or not you should at least realize it ain't happening by now. =P
I think that the reason why people yearn for remakes to be like that is due to some considering the third games better than the two originals, normally because the third games fix a lot of stuff people didn't like about the first two. One that I can name off the top of my head is the fact that Diamond and Pearl had practically no fire-types, if not for the fire starter and the Ponyta line, something Platinum got rid of, but also something that BDSP kept, and that made people very unhappy about.