I'm perplexed by what u are saying.
This isn't some massive, pie in the sky, unattainable request. Its completely straightforward, well defined, and narrow in scope, and well within Florian's capabilities. He often updates mp3tag to support different tags.
I am simply requesting that mp3tag support the editing of whatever atom windows uses to store ratings. I gave him all the info he would need.
Nothing is "broken." Not the file format, not mp3tag. This just happens to be a case of an atom that mp3tag currently does not support but could easily be updated to support.
I look forward to Florian adding the capability.