I like to close this open discussion at this point. I have read through all comments, and although some issues are annoying, they are more UI and usability related than core issues.
Personally I also think that it is harder than necessary to contribute to the web UIs like PaperUI and classic UI. But that is another discussion.
I will now assign each problem to the relevant GitHub issues or create Issues if required. Those problems might be perfect matches for the Hackathon that might happen in the near future:
Cheers, David