Impress - Optimal View

Is there a way to specify that the view while editing in Impress is always the “Optimal View”?

apparently not.
Ask/Guide - How to use the Ask site - The Document Foundation Wiki #Feature_requests

You could create a keyboard shortcut, e.g. Alt+O.

  1. Click Tools > Customise > Keyboard
  2. In the field Type to search type Optimal
  3. In the Function pane, select Optimal
  4. In the Shortcut Keys pane, select a suitable shortcut, e.g. Alt+O. Click Assign. OK