>> On the subject of remote displays, I've long thought the best way to handle remote applications is, rather than copying bitmaps back and forth, is to handle it at the toolkit level.
> Sure, that's doable. I'm pretty sure some programs will allow you to do that. Probably the same percentage of them which allow you do connect to the new X server on the fly (as emacs can do).
If you count web applications then there are probably more of them around than that.