1) I suspect that making the eDGe store in any way less prominent is probably a non-starter because generating revenue through the selling content is probably a critical piece of Entourage's business plan (which is probably why they haven't made it easier to hide or minimize the size of the menu bar).

2) Sounds cool, but wouldn't adding individual book cover icons be in conflict with #3 "make the Library as fast as possible?"

3) I really like the idea of setting the default tag to something other than the entire universe. It would seem to be a relatively easy option to add.