I'm fan of modding, but I wouldn't want to waste my own time doing modding in cases like this. Outside of opensource projects, modding works well for old, effectively abandonware games, running on custom sourceports. Where almost everything is allowed and corpos don't blatantly abuse peoples free work. I do mapping for Doom and Heretic. I play Minecraft mods occasionally but I wouldn't want to waste my time doing Minecraft mods myself to support Microsoft Mojang mismanaging this game so bad. Theoretically Luanti could have been the solution, but it's just damn bad because that particular kind of top-down approach to extensibility didn't work well. Fan art is in much better place because it's a mutual benefit: artists benefit from working with popular franchise because it draws attention to them.