So I find that I mostly really like Spaces in Mac OS X 10.5 “Leopard.”
However, there are a couple of things they could do that would make them rock even more:
First, it would be very cool if users with multiple screens could configure it to only flip one screen instead of all of them together. That way, I could have my IRC, iChat, and Stickies on my external display while I flip from space to space on the iMac’s built-in display. Sweet.
Second (and IMHO unnecessary if the previous option were implemented) would be the ability to specify windows (or apps) that are always visible in all spaces. This isn’t as cool as the first option but would let me approximate that effect.
This would make Spaces a killer app for me, instead of just kind of handy like it is now.