How to show column with "User Rating" tag field from ID3v2.3?

How can I view/show a column with the contents of all "User Ratings" (from ID3v2.3 tag) from all currently listed *-mp3 songs?

What happened to the hints given to you in this thread:

I am talking about the tag field "RATING WMP" which is listed on this webpage:

According to your statement it seems to be that there is no corresponding column.

So where can I setup an official feature request to add such a column?

The good thing is that you can implement that feature yourself.
As you found the help already, I would like to direct your attention to the section for "Columns":

use %rating wmp% as field reference.