Ah, that makes sense. Actually this is part of the reason I don't use more Spaces than I do now, I have two Desktops usually and the rest are all various fullsc

Ah, that makes sense. Actually this is part of the reason I don't use more Spaces than I do now, I have two Desktops usually and the rest are all various fullscreen and split-screen spaces. I think ideal for me would be: 1. If I am in a Desktop space (i.e. nothing is fullscreen), then ⌘⇥ ought to remain within the current space unless the app I am switching to is pinned to a particular space or the only instance of it is fullscreen. Switching to Firefox when the only extant window is on my other desktop should switch to the app without switching to my other Desktop space, that way I can open a fresh window. Clicking an http:// http:// link should open a new window in the current space. Switching to NetNewsWire though should take me to the fullscreen app, for it is always fullscreen in its own space. The reason for this is the whole point of Spaces for me is content separation. A web browser or file browser is a general purpose tool, I might have multiple windows of each open pointed to different resources related to different projects. I want to maintain that separation, and if I want to change what I'm working on, then I can do so through Mission Control without ⌘⇥ taking me out of Space I'm in. I want it to be an app switcher, not a Space switcher. 2. If I am in a fullscreen space, then ⌘⇥ should go to the most recent window of that app that I was looking at. If I was looking at a Firefox window in Desktop 2 and I have 3 fullscreen windows of Firefox and 5 more open windows in Desktop 1, then ⌘⇥ ⌘⇥ ⌘⇥ should toggle between that window, the fullscreen app, and then back to that window again. #2 actually happens though, but #1 does not unless I keep a (often blank) Firefox window on all of my desktops, and then I have to do the same for each app that I would want that behavior. That is to say, Spaces needs some work, but for the most part apps that you click on in the Dock should launch in the Space you are in unless you have them pinned to a specific Space. > While a nice new feature, when working on my 27" iMac this isn't very useful to me. I usually switch between ~5 apps and having two full-screen doesn't fit my mental model. Maybe I still need to get used to it. It isn't for everyone, which is fine. Having my Mail and Calendar open side-by-side was something I picked up from a friend. He has the same setup except he has a multiple monitor setup with Mail and Calendar occupying the screen of his laptop. There's much to be said for not trying to incorporate each thing that exists on your system into your work if you simply have no place for it. It will be there if you need it.