ability to have "does not equal" in a multiselect filter

I want to be able to see features that do NOT have a certain tag (for example) or other similar fields.

For example, we are putting a tag on items that have passed a certain validation, and I need to have a report on items that do not have this tag. Currently I can only select a filter on either, blank, is not blank or equal to one or more tags. I would like the option to include does NOT equal one or more tags