FF3usME Spacing Issue

There are 8 consecutive spots in the spell list in FF3usME. The first is called Joker Doom, and the other seven are blank. They have an additional Rename button under a "Real Name" heading. You can use that to rename them.

As for B-button dash, it's not something you can do through the editor. There is a patch out there that does it, and it would be a simple matter to modify it so that you only dash if you don't hold the cancel button, or even dash permanently.