Gaga didn't create EPs but she deff did have a hand in modernizing them. But actually, I can't say she created the idea to do it, because I don't know, maybe her label did. But still.
I don't get why everyone credits GAGA for the re-release, it was interscope. Interscope asked for a re-release in November, along with new songs. All Gaga did was separate them