Why aren't there leaderboards for individual levels? I think it would be a fun thing to have!
There used to be, quite some time ago. From what I recall, it created a ridiculous backlog on the verification process and was removed. They used IGT, which meant a LOT of ties for first place in most of them... although it did allow for some unique and interesting IGT-friendly strategies you would never see in RTA in a couple of levels. There is 8-4 IL available on the category extensions (RTA timing), but I suspect the ambitious nature of trying to maintain the other 51 ILs remains too tedious.
Effective immediately, any submissions using the SNES9x emulator will not be verified. The SMB2J mod team has concerns about its integrity due to its ability to overclock and remove lag frames, which may not be easily detectable. Additionally, we request that all BizHawk submissions avoid using the
