Toggle horizontal or vertical placement of doors and windows.

It's somewhat time consuming at the moment as all doors and windows appear to be set to a vertical placement.  Maybe holding down control and mouse-wheeling can cycle through a fixed range of vertical, horizontal and diagonal orientations.  

And perhaps you could draw the start and endpoints of the door by dragging the mouse button, with clicking being a default door placement.

Something needs to be done to ease the placement of windows and doors.

A quick fix to easily place e.g. a lot of vertical doors: 1. Place one door (using 'lightning' - 'place door') and make it vertical (using the 'select' tool  to drag the circle on each end of the door) 2. Click the door using the 'select' tool, surrounding the door in a light blue selection box 3. Copy the door (CTRL + C) 4. Using 'select' tool, click on the map where you want the new vertical door 5. Paste the door (CTRL + V) - it should place it centered on where you clicked the map. Mine does anyway 6. Repeat 4-5 to place more doors