It was one of these almost invisible high level cranes which brought this Helicopter down lets not forget that. No Crane no incident!
It's a valid pov and you're entitled to it. {joking} Should we try to bulldoze the Alps, Himalayas and the Andes to make it easier for us to route? Or put lights on top of them? {/joking} OK, I exaggerate to make the point and cranes aren't permanent but aircraft have to fly in and around cities with these clearance problems in mind. SSA. Around towns and cities we should regard air-routes to be a privilege, not an entitlement. Designated clear areas are in place and there is seldom a legitimate excuse for a nav error, imho, other than an error as a consequence of some other problem or mishap. The MkI eyeball is a poor navigator's tool. It's an incredibly valuable aid, not to be believed alone, but nowhere near as good as most avionic navaids.
The only system available today that's suitable and safe for poor viz descent and landing near to or in cities is ILS. If ILS isn't available for any reason, get out of the city or fly well above it. Flying in reduced viz near to a city demands greater skills, and greater instrumentation (ground and a/c).
Nearly all accidents are as a result of a chain of events, seldom just one thing even though one thing might be the trigger and be found as "The Cause of The Accident". Seldom is, though, is it?
What worries me is that rotary wing per se, or even GA as a group, will be restricted as a consequence. That would be very damaging to the industry and those who work in the industry, as well as the public at large who (though they don't realise it) benefit from the improved performance of industry able to move key people around quickly and safely.
While we wait for the report, and the inevitable kite-flying leaks, we should resist knee jerk responses. These a/c are safe. The pilots are safe. The present airports and heliports are safe. Accident and incident levels are very acceptably low. From all we've heard no changes are needed.