This has now been implemented, many thanks :)

v2.7.2:
Tag sidebar: tooltips with full tag name when tag name doesn't fit

I constantly fight with this problem, and CN inserting the URL into the Link field when no text is selected would be great :)

I personally would not make use of auto show or auto hide, but docking to the screen edges would be nice.

For me, allowing both inline images (which I have voted for in the separate idea) and links to external files are essential.

This is probably the feature I most want to see in CN. Please not the combo-box though - that offers absolutely no advantages over the file menu, and would be useless to me. The whole point of this feature for me is to save mouse clicks due to the large amount of time I spend switching notebooks. At the moment, I click File, then mouse down to a notebook, then click again (two clicks, and some mouse movement). With a combo-box, it is still two clicks and mouse movement. With the notebooks as tabs, it is a single mouse click and a smaller amount of mouse movement. To someone who hardly ever switches notebooks, that may not sound like much - but to someone like me, it is a significant improvement.