Most distros could also learn from Arch and create something similar to the AUR.
i've seen Void's xbps-src tool compared to the AUR multiple times in /r/voidlinux (and i guess it's like a decentralized AUR?? you can build+install pkgs from source using the package manager, sure, but there's no one big diy xbps packages registry like aur.archlinux.org for Void) and while i don't really see it, if you follow that train of thought, void's pretty set in the "right direction" :D
relevant meme: https://lr.psf.lt/img/nxyqaxzna4e91.jpg