Actually, I've already tried this. Except it just takes way too long.
You can't mass select all (CTRL+A) of these mods and set them to a group (in the bottom bar which includes Ghost, Enable, Disable, and Mark as Regular) all at once so it would take me hours and hours to fix every single plugin meaning it's basically a lost cause.
While we're talking about these groupings it got me thinking about something else unrelated. Why can't you search mods by Highlight on the Mods page and why can't you "Group the Table" by Highlights. With someone who has many many mods, I feel as if the Highlighting feature needs to be expanded upon such Highlighting the entire mod bar by the highlight color through like a setting or something. I find the Highlighting feature very useful for separating mod types and managing mods, but this feature is greatly underdeveloped and almost seems forgotten. There is also some highlight symbols I feel like should be included such as Trees (tree mods), Water (water mods), Clouds or (for sky related mods), Storm Cloud (Weather related mods), and maybe some type of small weapon for weapon mods . Anyways this feature just needs more improvements.
Another thing you can't mass select and do is Uninstall mods similar to when you click on the mod status and click the green arrow next to the Enabled . If this feature was added to the item select bar below, you could mass uninstall mods without actually removing them from your system completely. You can only Remove, Reinstall, Enable, and Disable selected mods.