Thats a really great new feature. Very nice. Fading out the whatever-listbox when holding down Ctrl is another innovative idea of WT. I have one wish to add here: another key to rearrange the tooltip so it will be completely visible. I often run into the problem that the list shows me a tooltip that extends over the right sider border of the screen, which makes reading the tooltip entirely impossible.
To be fair the fading of the listboxes actually comes from VS2008, it is a new IDE feature there. When we added this to VA listboxes we made it work in the other IDE's as well. It is a very appealing ide
Tooltips extending past the edge of the screen is a bug, and on our list of things to fix: