[nicoff]

I know that it is not an ideal solution. But There is spreadsheet running around that tells you all the available MQA albums in Tidal. I use that sheet and the Tidal app to find the MQA albums that I want and then add them to my Tidal library.
Then I go in Roon rescan the Tidal library and sort Albums by date and all the albums that I just added show first. Then I just tag all of them in one shot.
Not an ideal solution really, but one way of doing it more efficiently than having to play various versions to figure it out.
I bet others have figured out other ways to do it.