Questions similar to the In Ubuntu 16.04, how to set shortcut-keys for maximizing a window only horizontally or only vertically? lead to a "wish" for developers of Ubuntu. (After I have got some experience with the Ubuntu 16.04 and tried shaping windows, it appears to me that merely shifting the window title bar to the top or a side of the display, which in the new Ubuntu version maximizes the height or width of the window, is not sufficient.) Where should I place such a "wish"?
It's called a "feature request": Where can I send feature requests?
Note that Ubuntu is moving to GNOME Shell, so feature requests for Unity won't be of much priority. And they probably won't be backported to 16.04.