Close button in another corner

I noticed in qip'e that the close button is on the left; on the right, the [_] and [x] buttons are turned into a tray.
I found it quite comfortable. It is hard to miss and there are no annoying asking windows.

Most of the windows on the left have an icon when you click on it and a menu pops up, just like when you right-click. I never use it. I think that if the buttons for closing and controlling the window are in different corners, you will not need to mark this way, being afraid to accidentally click on [x]. On the other hand, the user, when he brings the cursor, thinks what to do with the window: kill or leave.
Perhaps this option would be more correct.