The only game I can even think of that's hudless is Astroneer and it took me like 30 hours to notice. Can't imagine how hard that is to do well

The only game I've played that really managed to pull of HUD-less was Dead Space. They really thought through the game design and interactions, it's just a masterfully crafted game. I believe Dead Space 2 is almost entirely in a single continuous camera shot as well, kinda bonkers.

No ambitions for a hudless, waypoint-less gameplay system survive playtesting. There’s friction and then there’s watching someone do the same loop around for 30 minutes. I once watched a streamer play a game I worked on. The level artists had meticulously and organically sign posted where to go - like pulled out all the stops with lighting and directionality of the environment. Stopping just short of putting any yellow paint anywhere. The streamer still fucked it up.

Same. I want my Skyrim to be more like morrowind

It's fine so long as they don't just move it into some pause menu I'm then forced in and out of constantly to get information.