Has this game aged well?

[*Peter*]

The game is very basic but have potential for a remake with better features like a whore class.

Personally I think that they should fix the available white magic spells for Knight;
it looks very strange when he cannot completely fill the LV3 spells, and cannot use any LV4 spells at all, especially when this also makes him only able to learn ALIT and AFIR, but not AICE or AMUT.
There is also no reason for him to not be able to learn PURE:
that spell is almost as basic as CURE, and it is certainly not so useful that it would make Knight overpowered or anything.

I am cool with Knight not being able to learn HARM;
this was probably a fair balancing factor, since it is good enough that he can murder most enemies with his physical attacks, so it would possibly be too much if he were also able to spam HARM spells on all the undead enemies.
However, a proper spell list for Knight should be able to look something like this, as an example:

CURE --- FOG --- RUSE
MUTE --- ALIT --- INVS
CUR2 --- AFIR --- HEAL
PURE --- AICE --- AMUT

This would clearly look a lot more tidy and complete than the half-assed spell repertoire that he has got in the actual game;
I honestly believe that SquareSoft probably rushed that part, since I doubt that they would leave it the way they did there.