(SPOILER)I can understand that perspective, but there was a recent interview where they explicitly said "We didn't see the point in just making FF7 with better graphics and with voice acting. We thought it was only worth doing if we tried to do something new and interesting. That is a risk, because it might end up worse off, but it's worth trying to make something better too." Which is pretty explicitly the plot of the time ghost plot itself; Aerith clearly knows a lot about the future and says out loud she's scared of deviating from that, because she knows it results in ultimately beating Sephiroth and Jenova. But she also says it's worth trying for a better outcome than the one she foresees.

I know not everyone likes that, and some people would rather have a more direct remake, whilst others would be fine with changes but without bothering to justify/explain them, but I thought it was pretty good.