I have looked through the FAQ, and the actions section, and don't believe there is anything to answer this question.
Does anyone know a way to make these 3 steps a 'one click operation' or action?
Here is how I use Mp3tag 2.75..
Open Mp3Tag and select Directory
Come back a hour later as it takes a long time to read 8,000 or so files.
Select all Mp3s, and Right click -> Remove Tag
Come back a hour later as it takes a long time to remove tags on 8,000 or so files.
Select all Mp3s, and Right click -> Convert Filename - Tag
So basically it takes a whole day to come back and go through these steps, when it seems like there should be a way to have it do them all overnight on its own...
Besides that I love Mp3Tag, thanks to the developers for a great application.