The game is old, so I dunno if the dev is still working on this game, but if so, I would love if there would be a parry training mode added, to help those of us who can't parry well.

Basically make it like the battle / 1 vs 1 mode, where you select your character and the opponent after you buy them from the store, but:

-make both characters have infinite health
-in the pause menu, allow yourself to select what move the opponent loops over and over, as well as how much time passes in between each move. you can also select "random."
-alternatively, in the pause menu, you can record the opponent's inputs, and then when satisfied, play them back, much like most training modes in modern fighting games
-have an indicator that pops up to show whether you parried too early or too late for the last unsuccessful parry
-have an option from the pause menu that resets to the beginning, for those impatient people who don't want to wait for their character to slowly get back up after getting knocked down to practice parrying again
-you can even allow an additional costume to be unlocked if you parry 20 times in a row any move for every enemy character

Just a suggestion; I love the game regardless of whether you add it in or not.