I Support this wish too.
My theory is that any potential use of navigation didn't enter their plans at that time. I hate to repeatedly suggest a lack of imagination, but...
They built a truly impressive, somewhat scientifically explainable, universe. Filled it with amazing stars, beautiful planets, fantastic nebulas. Then tied it all together with simplistic fetch-or-shoot game mechanics. It would only make sense that all the incredible effort they threw at creating landable planets would fit the same mould. Planet surfaces were just another endpoint to collect things from or shoot things at.
They gave you navigation to the settlements. That's all you'd ever need. The annoying blue dot or the better sound-tracking play to find POIs and the like didn't rely on navigation as such because they were always in random locations. The thought that someone would want to go to a specific location that wasn't a settlement? More than once?! Unthinkable.
I'm pretty sure the lat/lon readings were put there just to make the interface look more interesting rather than any thought of potential usage.
Of course, this doesn't explain why nothing has been done since the first development. Particularly since FD has put their own non-settlement sights around the place to visit.
And then again, the answer could simply be...
Here's hoping they will eventually fix this "feature" and improve on their communication with the players' community.
I mean, this is a feature that had to be implemented from the beginning. I was looking at the planetary map the other day noticing there is room for waypoints. And in fact the game-mechanics for the waypoint coordinates are already in the code i.e. the rotation of the planet by the tumbstick on the controller and the mouse cursor on the pc. The only thing that a developer has to do is to make a gui element to show these coordinates and let them display them in-game just like a planetary outpost or settlement. I guess it's 15 min. of work, the only thing is that this game is not open-source or even availible for anyone to mod on the console. You should have developer options on the xbox one to adjust the game code of Elite: Dangerous if that is the way that you want your game to be developed. Writing about this lets me think that the future of game development is by the gamers itself. I recent day we see this as modding and is widely implemented on the pc, Microsoft needs to be able to open their development enviroment together with game developers like Frontier to let the gamers decide and build-on what they want to have in game.
Just imagine a option where gamers can vote on the best option they want to have in game made availible by gamers themself. You mod something- submit it in game - gamers vote on the different moddable options- they get build in the game. This would be a beginning but not near enough the ultimate example namely a free-moddable environment for xbox one. Big game coorporations like Microsoft need to be able to let go off their monopoly and let the gamers build what they want, they just have to provide the engine and a platform.
100% on this! also 100% to allow the bookmarking of planet locations.