This is developer preview two which means there is a previous version already out. None of what you want is there and never will be again.I hope they fixed Mission Control and gave back 'ALL APP' expose... or at least an option in System Preferences to ungroup windows in the same application. Anyone who multitasks and has to drag/drop items from one app to another (illustrator to photoshop) will know how much of a fail Mission Control is.
Just accept Mountain Bunny and all the iOS features iBunny has to offer. Resistance is futile.