I've been doing my best to Google MTG Set Editor stuff for awhile. I even used the old sourceforge forums. However, somehow, I only saw this site recently. I came so that I could ask technical questions, but I might also share some of the things I've been working on. I'm more than willing to "showcase" my stuff, on r/custommagic or even here!
p.s. Bonus! I've been searching for a guide on how to work with the Export All Cards to get mine named how I want them. Preferably: card #-Total Set # - Card Name