Not really good to make this happen even if this was been suggested to anyone especially with heavy cased where the person create huge scams. For minor cases maybe its good to look at it but much better to leave those things exist since sometimes other users will look at it as their indicator to do better job so that they avoid to get the same negative feedback to other user. Maybe best for other active user which have negative feedback is to wait. Since provably the DT status of that user might be taken out due to inactivity.
Only DT1 status is not being approved in case of long inactivity, DT2 status is based on trust of DT1 members and will not be taken away just because of inactivity. DT2 tags are visible by default as well. I'm in DT2 and not in DT1 at the moment, but my tags are visible anyway. So to wait until the one is out of DT1 and then all from DT1 who trust him are also out of DT1 could take too much time. It's better to try to solve a problem with DT member when he's still active on a forum and not to wait the problem will resolve itself.