I totally would, I think! I'd have fewer nerves about getting broad with my tags that way.
EDIT: if this could apply to selected submissions rather than all or nothing, that would be great. Since there are still some things I'd want findable, like commission sheets or anything else for offer.
This is also reminding me of a question I've had before but usually forgot just as fast (since my need for such a thing is far-off), maybe not even totally related to all of this, but is it conceivably possible to see some compilation of your own gallery's tags, or search them within just your own works? In the case it gets so big the organization would help?