Workshop Tag: Plugin
Please add a workshop tag "Plugin", which prevents a mod from showing up in the mod list at all for worlds, much like "scripts" and other such things that don't appear within your mod list. Obviously, after such is done, we will need a way to upload plugins to the workshop, probably via the plugin's tab instead, which I'm sure the author could tweak to show plugin upload buttons.
Examples of such mods that should have this tag:
Multigrid Projector: https://steamcommunity.com/sharedfiles/filedetails/?id=2415983416
(Honestly though, these should all be default in the game, but at least add the plugin tag to clean up the mod list....)