>>723024470 (OP)
Sonic & Mario romhacks primarily operate in the field of 2D side-scrollers.
Sonic gets 3D fanworks as it's fandom is so deeply entrenched in culture across all forms of media - whereas Crash could never truly get that kind of foothold, being a 'mere video game' property of Universal to start with before being hot-potatoed into the hole it's found itself in now.
Crash is well-known but definitely not on Sonic's level - let alone Mario's.
>>723025119
I've been trying to get myself back in to active development after being stuck in this long-term rut and dealing with declining health issues. At the moment, research and pull requests on the decomp side are ongoing. If you or anyone else have got any questions; feel free to ask.