Comment 57 for bug 532633

I agree with James Schriver, once one get used to the new position of the buttons, he/she can reach them in less time because top-left corner is almost always nearer the content of the window than the top-right corner.

This, though, doesn't explain the choise to set the new position of the buttons to all other themes. Each theme must have its own settings, so revert DEFAULT metacity options to older ones, and change the individual settings for the new two themes.