Pretty good plugin, it simplify a lot of things if u don't want to use world guard for everything, and it add things that world guard just doesn't add. Maybe my only suggests are
1.- Do something like 'DoesWaterPlusLavaObsidian' for avoid creating obsidian from lava and make water + lava ignore themselves.
2.- Maybe a per world way to apply the gamerules.
3.- Compatibility with 1.21.9 and 1.21.10.
1 - Added! I also added gamerules for stone generating, cobblestone generating and basalt generating!
2 - This is already a feature, each world has its own gamerules! I guess looking back at it now that isn't as obvious as I intended!
3 - 1.21.10 support is available for download now! Sorry for a bit of a longer wait than planned, this plugin is also a mod (not available here on spigot) and thus there was a lot more work to do to update those than the spigot side, and I wanted to update all platforms at once! Thank you for your patience!