I'm debating with myself atm as to whether or not I want to take another crack at making dungeon mods for Skyrim, due to the Creation Kit updates.
Problem is is that I'll need to update Skyrim Special Edition in order to get in there and start messing around (translation: testing), which means archiving my SSE installation (which is a pain cause I made that install before Nexus made the switch to Vortex so I've got to do everything manually). Or maybe I'll just nuke the installation entirely since I'm not really all that attached to any of my characters in the PC version of SSE. (I still frequently play LE with the exact same mod setup I've had since 2016, before I had this current PC)
If I do get back into it I'll need to remember to make frequent backups of my files though. My second Skyrim mod project was this uber dungeon that was probably a good 3 or 4 hours in length already when I had a computer malfunction and lost a bunch of data.