Believe it or not, till this day late in 2014, I'm still reminiscent of the days of Spaces on Lion and Snow Leopard. Since it's introduction i've abhorred Mission Control and it's petty excuse to use full screen apps only to resemble iOS devices. << This is me ranting and an opinion, of course. I need real functionality for true productivity and would perhaps even be willing to ignore all the OS X features introduced since 10.6.X - Luckily I have a late 2009 MBP which would allow me to install SL. However, say I was to purchase a rMBP, I would imagine it would be almost impossible to downgrade with such device. Any who, Spaces users rejoice! Any 3rd party solutions are appreciated. Of course, Spaces in Snow Leopard itself was just the bees knees.