When I was a professional helicopter pilot you arrived at a landing site you looked round to see what effect your downwash would have on the surrounding area. With this in mind you would tailor you approach to ensure that there was minimum disruption to the local scenery. Departure was in the same vein. Pick a route, sort out which departure profile was safest and launch from there.
Nowadays pilots look at a departure chart,. ignore the terrain and create general mayhem.