Allow Delay on Emergence of Menu

If the menu is very large, it can cover up the entire toolbar or most of it. That prevents me from moving the cursor to some other part of the toolbar, in the case that I do not really want the big menu to appear. If there were a delay in the emergency of a menu, it would make navigating a cursor within the toolbar much easier.

I suppose that the solution is to remove the "open on mouse hover" option for the menu. But that would be inconvenient for other reasons.