I would like to set the default render size.
I always render HDTV. I don't want to have to open Render Settings > change to HDTV then hit render.
When I open a new file and click the render production -- it should render whatever size I have added to the preferences for that button.
If I need something different -- I can change to that setting. But 99.9 percent of what I do is HDTV.