I try to moderate hacks here in a somewhat constant way. Feel free to contact me if you have any question.
I have a github where I post dumb asm stuff and you can check it out
I also maintain Pixi, which you can find on the site in the tools section and on github at its own page
I also wrote a couple of extremely simple tools:
This lets you port non sa-1 pieces of asm to a sa-1 hybrid form, please report any bugs that you may encounter with faulty conversions to me! It was primarely tested on sprites so it might not work with everything
This is a rom porter tool that ports an old rom to a new rom. Made to work with the officially support tools by SMWC