I was noticing that the tag vb is out there with a lot of tagged questions, but it's not very useful, since you generally need to know which variant is being used, vb.net, vb6 or vba. There are thousands of questions that would have to be looked at manually to fix their tags. I was thinking that it would be good to put a tag on hold, where it was still out there, not synonymed (since this is a superset tag, it can't really be synonymed), but not usable. That way over time it could be edited out of existing questions (most of which probably have one of the subset tags anyway).
Note: While having a Tag Hold status is the topic of this feature request, two things about my specific case:
A batch script could be run by the Team to eliminate vb on any question where one of the subset tags is used, that would get most cases.
Versions of VB earlier than 6 also have their own subset tags already, so everything is already covered.