A number of FFVII's elements haven't aged well and need updating. Its game design, however, is not one of them. The unsurpassed pacing is why so many still hold it as the greatest game of all time. The combat is the most fluid and responsive the series has ever had. People want a game remade because they want to play it again, but with all the bells and whistles that can bring it to life like never before.
The whole "go play the remaster" attitude works both ways. Why not just make a new game?