Changing behavior of Windows 8 Win+Space language changer

Solution 1:

No, you cannot, but you can at least order the languages to your liking:

That would require multiple keypresses to get back to the one you were using before. However you can use +⇧+                 to cycle backwards. So if you order the languages so that the two you most often switch between are up top you can just use +                 to switch once and +⇧+                 to switch back.

You can also access the old hot key options by clicking "Advanced settings" in the sidebar of the Language settings:

And then "Change language bar hot keys:

Here you can at least set hot keys for switching to certain languages/layouts just like before (and get rid of that annoying Alt+⇧ hot key):