Merge Desktop Preview and Fullscreen Preview?

[afflicto]

First of all I really love this app!

Anyway. I'd like to merge the Desktop Preview and Fullscreen Preview so that I can switch windows and also virtual desktops.

I noticed that if I init the desktop preview and drag a window, a spot on the left slides forth giving be the ability to drag windows back and forth between other virtual desktops. I'd like this spot to be there at all times basically.
Just like in ubuntu

Thanks in advance!

[Patrick]

I noticed that if I init the desktop preview and drag a window, a spot on the left slides forth giving be the ability to drag windows back and forth between other virtual desktops. I'd like this spot to be there at all times basically.

Sorry, I really have no idea what this "spot" is you're talking about or what it has to do with "merging" Desktop Preview and Fullscreen Preview.