If you actually did that, it would make my dream UI layout possible! :P
Can't wait for BT4 to be finished.
Another nice thing (that might be a little harder to do) would be bars that come up based on location. Like, when I am in a major city, I might want a bar full of my professions, etc. to come up, but don't want that bar to show when I'm out in the world. Or a bar that pops up when you enter a raid instance, etc.
Not even sure if that's doable, but it would be neat.
That would be interesting, though I don't know of anything that does that. I'd use it for a small bar containing raid-specific macros (OMG STOP DPS, *taunting* <blah> next, etc) and in town fun macros and trade macros. It might be easier to just have some separate small mod/bar that did that... but I don't know of any that do.