I think a RPG-Maker version should be better...
More, different and better-looking areas. Examples : a little wood with a lake, where Mieu is bathing at the beginning of the game ; or castles looking really like castles ; or a ruined village in Aquatica (where lies the passageway to Aridia). It includes differencing each planet, for example in the idea Landen is a "normal" planet and Elysum a "forest" planet, in the game there is no real difference, in the remake ther could be forest-like dungeons and battle backgrounds...
Add musics (from PS series, originals or remixes). There are 2 wonderful arrangements of PS3 for example :
http://www.youtube.com/watch?v=vygJg-Vv ... re=related
http://www.youtube.com/watch?v=BgIBI6tF ... re=related
http://www.youtube.com/watch?v=zHRLH-01M5M
And many more... (I freaky love video game music and remixes)
Set a different techniques system (disturbation isn't bad, but I don't really like the plot "I've already all my techniques when I join the party")
More techniques (why not sword moves for the princes, like "Air Slash" of Chaz ? Or "double slash" of Rika for Mieu ?), including elemental resists and weaknesses, and more status ailments (only poison and KO is poor...
).
A better class differenciation between chars. I know that classes aren't the interest of PS3 (but of FF5 or 9) and that with the disturbation you can change a little the abilities of the char (heal all, greatly heal one member, resurrect...), and even that there IS differenciation : princes are more or less brutal offensive, Wren is totally for brutal attack, Mieu is a powerful warrior and healer, Lyle and Kara (I've a doubt) are fearsome sorcerers (with only 4 Melee Techs !), Laya and her daughter are good healers. But it could be better if we had a swordsman with sword techs, a cyborg with anti-cyborg (ennemies) abilities, Laya with secret powers learned from her legendary sister...
Battle animations and display like PS4.
Explanations of the techniques. Even now, there are some techniques that I don't know what they do !
More bosses, with weak points if is it possible (with the techniques and status ailments expansions ideas). For example : a guardian in Sunken Palace.
And, most of all... A better narration !!!! Who is Lena ? Why the hell is Satera's princess in Landen dungeon ? Why there is an obvious passageway from jail to shop ? Why when Dark Force is free from Sunken Palace there is only a little text, and not graphical effects, apocalyptical music, monsters poppings, etc ? Who disturbed the weather and moons controls systems, and why ? And many other things... Including better stories differenciations, so possibly including new events (example : to be advertised of Satera's attack and help the defense of this castle, instead of being advertised when the castle is down and deserted).
Why not few side quests ? Like finding a way to cure Lyle in Ayn's quest for example. The reward could be an unique technique... or even old Lyle as a party member !
Note : for the System controls disturbed, amnesic Maia on the shores of Landen and Lena interested in finding Maia, I imagined a mini-prequel... Why not when the player complete the four endings ?