I haven't bothered much with them yet. I think they'll come in very handy in the near future, but for now it's a bit cumbersome to use for me.
They were a last minute addition to the previous patch and not completely fine-tuned (it was probably something more like a "let's see how this works" deal), i'll use them a lot once they are though.
I only have two problems with them, but they both make it a bit hard to use mid-flight:
1) The toolbar is not resizable even after alt-clicking on it: not all buttons are visible on my resolution. Mayybe i can fix that myself, i think i'll have a look in confUser.ini later on.
2) The fonts and marking lines are a bit "slim" and get lost in the underlying clutter of the map. If we could have adjustable font size and line thickness, maybe a brighter colour too, it would instantly make them useful for mid-flight planning.
As for the waypoint tool, i think it could be interesting in case of online wars/coop style flights and so on: Join server, spawn a group of aircraft and give them waypoints, let them fly on their own, come back 2-3 hours later and jump in the pilot's seat.
Is this useful? Well, maybe not now, but it will be once we get future expansions and long range bombers. Then someone codes a small external program to make it possible to upload such missions to a server and we're set: you can upload your mission while you are still at work, your flight will start as AI at the specified time, you go back home, eat dinner, talk with the family, put the kids to bed, spend some time with the wife and when you're done with all the real-life stuff your flight of bombers will be nearing enemy coast...log-in, take control from the hands of the AI and fly the interesting part of the mission, then spawn another flight and let the AI fly the bombers home
