>>715209318they are different stories basically, they don't don't even have the same characters - old one has way more routes, mirror moon translation is better than 99% of today's videogame excuses for localization, and it also has a sequel.
New one looks cool, some new characters, and the promise of maybe more later? I'm pissed that for so many years they promised "ohh sorry no sacchin route, but in the remake we can do her justice" - now we don't even have far side stories at all yet, let alone EXTRA routes that clearly had been planned at some point.
I advise mirror moon original version, love the music, and then come and join the seethe cavern when you realize what they took from you later.