Tagging / naming of returning visitors

In spite of Piwik, I have to analyze the log-files, for naming/tagging returning visitors.
I would like to give each Visitor-Cockie a name/tag or even IP addresses and ranges. The name/tag should not be unique.
The input I would like to do in the floating window. This input should include the ability to choose between cockie, IP or range and should, and a input field to type the name/tag with a list of the last 5 names/taggs shown clickable.
In the configuration would be another page to edit, delete, or create this entries.

I think it could be a fine solution to some more than only me. In any case, thanks to the developers for what Piwik can do already today.