In the unmodded version of Final Mix, Sora has many Combo Modifier attacks. The ones relevant to this mod are:
---Sliding Dash, a Final Mix combo modifier that brings you to a distant enemy when you're too far away to use anything else.
---Vortex, a combo modifier carried over from KH1 Vanilla which closes the gap to a mid-range target, and also doubles as an attack for multiple targets. It covers more ground than the standard thrust, but due to its slowness, it tends to whiff a lot more than it actually hits.
---And Gravity Break, a Final Mix Combo Finisher that wrings (Strength stat+40)% of the target's HP. Not only is this finisher incapable of finishing off any enemy that isn't a Pot Spider, Zantetsuken completely outclasses it, as it deals the same type of damage but at a much higher level. After you beat the Unknown boss at Hollow Bastion, you pretty much won't be using Gravity Break at all anymore.

This mod improves all three of these abilities through moveswaps:
---Sliding Rave replaces Sliding Dash's animation with Rave from Sonic Blade, which does the same job except at a much, MUCH faster speed. While it's not really my cup of tea, it's great for players that want KH1 to feel more like KH2.
---Counter-Vortex replaces Vortex's animation with Counterattack, a move in Sora's toolkit that covers the same distance, but is much faster and more reliable. This one moveswap alone makes KH1 combat 100x better, since you're no longer stuck with only two subpar options for your mid-range attacks (the short-ranged Standard Thrust or the painfully slow Vortex).
---Gravity Bash replaces Gravity Break's animation with a very similar-looking attack from Ars Arcanum: Bash #5. While Bash #5 is a little faster than Gravity Break, its real value lies in the fact that it can continue the combo after it's finished. Suddenly, Gravity Break's inability to finish off an enemy, combined with its lack of knockback, turns into Gravity Bash's greatest strength; as it's now KH1's best candidate for incorporating a makeshift Finishing Plus ability into the game!

V3 adds another moveswap: Bash Swipe replaces Sora's standard side-to-side swipe attack with Bash #2.  Like Counter-Vortex, this allows Sora a much faster attack to deal with an array of enemies in front of him.  Between this and Counter-Vortex, you'll cringe whenever you see an unmodded Sora try to deal damage to a crowd.

In short, the following moveswaps are included in the Sonic Arts mod:

Bash Swipe [Bash #2 (from Ars Arcanum) over Standard Swipe]
Sliding Rave [Rave (from Sonic Blade) over Sliding Dash]
Counter-Vortex [Counterattack over Vortex]
Gravity Bash [Bash #5 (from Ars Arcanum) over Gravity Break]

V3 has working facial expressions this time, so enjoy the full version without worry!

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The Sonic Arts Purist mod is no longer provided on this page.  It now exists in its evolved form: Kingdom Hearts Final Mix - Idealized Edition

https://www.nexusmods.com/kingdomheartsfinalmix/mods/113