The only correct way to play FFT is either with the original Japanese or the original North American localization. Why you might ask? You get the game how it was meant to be played and in addition a better experience.
>Job requirements were needlessly increased in WotL and carried over to the current year demake. Dark Knight and Onion Knight classes added.
The Job requirement increases only increases the need for grinding just to use a particular job. DK/OK can never be played unless you intentional grind for them. In the original you can unlock most of the classes worth using with minimal grinding and spend most of the time doing story missions. You also only need to grind if you feel underleveled in the original. The total number of classes in the original is rich enough for a lot of replay without adding in a class that does nothing different from unique classes and a second class that does literally nothing.
>concise translation over pointlessly verbose translation
WotL's script purposely uses unnecessarily verbose flowery prose to "emulate Shakespeare," when for the most part the original localization did a good enough job in spite of some translation mistakes. Now the writing is a mess.
>Lack of nu-items which can only be acquired through time grinding
The inclusion of certain things like Agrias' birthday lipstick were a mistake and add nothing to the game. Moreover, acquiring them just results in more grinding.
>No multiplayer mode
A good thing. FFT was intended to be a single player experience delivering its creator's story.
>No slop AI upscaling
All upscaling looks terrible.

Emulate the original. Use a CRT overlay to smooth out the pixels. And there you go.