Speaking of ideas for Ion4, if such a thing should ever come to pass, has anyone come across/have opinions about acme (from plan9)? Personally, I quit like the way it manages its windows, and also the way you can sort of create your own user interface on the fly by typing commands anywhere - they instantly become clickable elements that trigger the command they contain. On the whole, I find it not quite usable, especially its interaction with terminal based applications, but it has some nice ideas in it. At least someone has thought about how to make the mouse a more powerful tool instead of just an irritating appendage.
btw, I'll add myself to the chorus of 'thanks for ion' - it is the only usable window manager, plus people who see it, as well as being slightly baffled, always say it looks cool. samer
