What are the sector sizes like in the USA? My CTA sectors are in the order of 950NM top to bottom, 20 frequencies combined from SFC to FL600 and when it's quiet I'll also be controlling my OCA sectors from 75E to 163E - equator to Antarctica.
For my group in particular, zooming in the screen range to suit terminal approach type vectoring would be displaying somewhere less then 10% of the airspace (less than 1% when combined).