I'm too OCD to have more than 1 app for a kind of content. I like organization and discipline on my computer. Code ? Xcode. Image manipulation ? Gimp. HTML ? Chrome. Everything works by app. So be it using Mouse 4 or 4 fingers up or CMD-TAB, I switch to the app for the content I need and then use Button 5 or 4 fingers down to get app expose and find the actual content I want.
So really, just popping up a bunch of Windows of different apps to me was complete lunacy. I never used Expose prior to Lion, everytime I did I would cry a little inside to the big mess that would pop up.
See, that is why people like me in an uproar over Mission Control. We had something that, for us, was pure beauty. It was why I switched to OS X. To have that replaced with something that makes me "cry a little" is so tragic (for me, wonderful for you).
It would be great if Apple figured out a method that made everyone feel that little tinge of joy when something "just works" they way that they do.
For me, MC would work well enough if the two finger up to spread actually spread the windows enough such that they didn't overlap.
It would work even better if it could show more than one Space at at time because, for me, Applications like Preview are usually open on every Space because different content is mixed together. i.e. I'll have Preview windows of images that I'm bringing into InDesign for the next figure all together on one Space, and then Preview will have pdf's of Papers I'm citing on another Space combined with "Papers2" by Mekentosj, Bookends and Bibdesk, while a third Space might have static .pdf's of papers I've already written along with .doc versions of my current paper to make sure that what I'm writing is both consistent and different enough to avoid self-plagiarism.
It is a different workflow and everybody works different. I really hope that Apple or someone else can bring the 10.5 visual experience to 10.7/10.8 (without sacrificing the MC workflow that works for others) because Apple added a lot of nice features that are nice but not worth living with the current version of MC for me.