I think it should be possible to add them to profiles.
For example my WEB-DL grabs must have the required term DD5. As it stands currently I have to navigate manually into dozens of shows to add this tag each time. If I can simply attach this tag to my WEB-DL profile then it's done in one click.
And then maybe I subsequently realise i need to exclude the term webrip from these shows. If I can add this exclusion tag to my WEB-DL profile then it can retroactively apply to all relevant shows in one click. Currently I would have to manually go into every show to add it.
It's just very cumbersome currently and doesn't seem to be designed by someone who uses Sonarr on a daily basis.