Problem: Dragging the window around with many tabs open is difficult because of small drag space between tabs and top edge of the window. The current drag space above each tab is hard for me to hit without selecting the tab below, or turning into a resize vertical operator.
Solution: Add a draggable space next to the minimize/maximize buttons. Similar to the way Firefox handles having loads of tabs open, there is always a blank, grabbable space, next to the minimize/maximize/close buttons. it’s looks to be about 1.5 buttons in width.