Just tried the latest Melty Blood Actress Again Current Code patch and I like what I see with the key remapping. I am always stuck playing on low quality keyboards so I had to craft my own key config workaround for fighting games.
I'm off to learn all of Roa's lightning tricks right now. If making the English patch cuts into your play time with the game, might I suggest you try out the Melty Blood Acrtess Again Current Code macro I posted recently on AutoHotKey's forums? It changed my entire view on how to play Aoko for fun. I'll follow your rule 10 and not post a link on my first post, but check it out if you're interested. Of course, use responsibly.
I also posted one version for regular Melty Blood if you're secretly like me and can't win many a story fight.