FPS isn't big for me so I just bop around looking for bio signatures. I feel the FPS portion parallels the flight portion the same way. It is flat, it is vast, it is a grind. That's part of why I don't do any FPS combat. I do wish it had better immersion, more features to FPS at least on some core planets and of course giving depth to the stations (since it's copy and past) but I do also wonder if that'd really be worth it. The game takes long enough to travel as it is, so do I really want to also have reason to walk through a place for hours? My headcanon for not having any depth on planets is because the depth would all be located on terraformed planets. We're barred from that so it works well enough for me (with suspension of belief). But they have such smooth transitions between instances that it doesn't seem like an integration problem, just an effort problem for a waning game.