I know you guys are aiming to stay as vanilla as possible, but may I suggest adding the "armor stand editor" plugin? (Link:
https://www.spigotmc.org/resources/armo ... tor.44752/I have not used this particular plugin so im not familliar with its mechanics, I've only used one that is now outdated unfortunately)
it allows normal players to edit armor stands in such a way that it makes poses, gives arms, that sort of stuff. And the reason I think it'd be nice is because it potentially adds in a ton of possibilities with builds
You can for example make tool racks with them, or aesthetic tents/barracks. Things that fit really well with this server's theme.
And even really nice furniture if you're creative
It makes something really decorative and detailed accessible for non-OPs, which I think would add a whole new level or challenge and creativity to builds.