Ah yeah I've got a bunch. I'll collect mass decks for series I really love, though some series I enjoy an average amount have so many characters that just collecting my favorites is basically like collecting a mass deck, haha. For some series I'll collect all the characters but only prioritize my favorite characters. I haven't completed any of my big ones yet, but my Persona 3/4 collection is allllmost done. Luckily for me some of my "mass" decks only have 4 or 5 decks in them because that's all there are, so they're like mini mass decks.

I'd like biracial19, please!