I think it would be cool to have an option of making your own tab. Then storing drag and dropping certain other sub tabs into that main one. If this makes sense I hope, but it would provide a sort of quick bar for you only, and maybe other admins who log in can make their own as well..
It could go on from there with the things, but their on the tip of my tongue but out of mind.
When I get to thinking of them, I will have to post something about it lol.