That's an interesting thought. The ultimate goal is to rewrite the save file format, which will get us past JJ2+'s original sin of not allowing save files in scripted levels. That would also allow save files to specify subfolders and so on. But both ideas could coexist, there could be save files in specific folders, or at least save files that only show up when playing in specific folders? I dunno. Maybe? I guess the first question is whether five save slots is enough as it is.