Oh wow, it's really amazing how deep you're going here! Especially since PSX hacks seem to be such a rare thing anyway. [...] OK, so I just had to double check - I think you were indeed involved in every single one I was aware of!

It's been some time since I played the PSX version, but it did have the occasional slowdown, didn't it? I don't even remember it much, beeing disappointed with the porting quality I barely touched it...

Since Grimoire LD mentioned the choice of Portraits I'd like to insert something here:
Couldn't help myself and searched for some more info on the mobile version. Now I realise that version has different Portraits as well. It looks like they touched up the GBA version's - it's hard to tell because of the poor quality but there's certainly something going on:

Rosa GBA looks sort of disfigured in comparison, doesn't she?! And Rydia should have left the place where time flows differently a little earlier, hmm...