Should a zoom feature be installed, here’s something to zoom in on: active airports and airfields. With no zoom, each and every airport/airfield would be just a tiny dot or cross or “x”, but zooming in would reveal the runway plan silhouette (to scale), airport name and ICAO/FAA designation.
Clicking on a zoomed-in airfield would pull up the airport activity page.
In re aircraft map symbols: now a dot, with trailing flight-path. Replace with a small graphical symbol that differentiates (if known) by commercial jet, private jet, prop-driven, private warbird, or helicopter.
An “out-there” notion: time-lapse airport maps. Pull up an activity map for an airport and play a time-lapse “video” of nearby activity over some previous time-interval.