I think it would be very useful if we could click on the heli route we intended to fly and this information is added to the route. I use Sky Demon to plan all the legs of a flight so it gives me total distance/time etc but doing this for a London trip is not an option, as it gives you way too many legs. Or would it be possible to have a free hand tool so you can effectively draw a route on the map?

Sure, that makes sense on the face of it. To actually implement such a system would be an enormous amount of work, and require fundamental changes to the way SkyDemon represents a planned route internally.

Without a really compelling need, this just isn't going to happen, sorry.