gerbsen,
I think they're going to focus on the major bugs first so don't be discouraged if we don't see any change in the next build. However, get whoever you know to also fill in that form!
If you look in the past posts I made a layout of how I think it should have been since day one.
This feature made for power users (spaces) never played nice with multiple monitors and now they are completely neglected with fullscreen apps.
I basically suggest to separate mission control between each monitor and so someone can virtually run as many fullscreen apps as they have monitors. and swiping between spaces doesn't mean moving all the monitors, just the monitor you're on.
one could code on one screen and check the code on four different fullscreen browsers in the other; swiping through them without disturbing the display with the code editor on it.
Of course make your own statement.
I focused on money (support for more displays has the potential for people to buy a Cinema display or thunderbolt) and I also talked about workflow. Not everyone with three monitors wants all three monitors to change when they change spaces.
I've learned to adjust, one app is ontop of the other an I use app switcher (cmd tab) to navigate through them. It works for me. Fullscreen apps looks useful for very small screen to optimize the most out of it (11" MBA). The root of the problem is how Mission control takes control of ALL the screens at once in my opinion.