This is just a quick 20 minute editor I whipped up. It mods the Vault Points, allowing you to purchase all those pesky items in the game (art, music, endings, etc). I don't plan to update it, but if do, I may add the ability to unlock dip switches and Gill later down the road.
However, I DEFINITELY WILL add dip switches and Gill if somebody wants to do the research for me, though! ;)
SF3 Editor.zip
(Special thanks to feudalnate for PackageIO.)