Tip: Switch palace switches normally disappear if you replay the level. However, if you insert them as direct Map16 and use the hex-edit at $00EEB2 in the ROM map, you can replay the level without a problem.
I have been hacking SMW for about 9 years and have made a few hacks which you can find floating around on SMWC.
On SMWC I'm a member of the Staff Team but I mainly deal with Discord related issues as I moderate it alongside a few other moderators. If you have an issue or enquiry relating to something on Discord then please either PM here or on Discord.
(you'll probably get a quicker reply on Discord FYI)
As always I am working on my own SMW related projects and hacks so hopefully I'll have something ready for people to play soon.