Depending on the use some of the items in the insert menu has an awkward position. After nowiki started to focus more on use of sources it became clear that the references-tag was used so much that it should be placed above the "more" marker.
I wonder if the problem is that the "more" solution adds complexity to something that is simple. It should not be there, as it hides important functionality. One solution could be to dynamically move elements above the "more" line, another could be to add a dynamically constructed speedbar.