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Shame the game doesn't have a light dark meter to stay hidden in the dark
Apart from the Unreal Engine issues, you have mentioned mostly Quality of Life additions you'd prefer in the game which would change the game on fundamental levels, mostly for the worse. Part of the entertainment of games like these is that not everything is fed to you and you have to discover and trial and error things for yourself. Or go on sites like this one to discuss stuff with others.
You don't need hiding spots, or a light meter, since this is not a stealth game, it is supposed to be a "horror" game where "monsters" chase you and they are supposed to have advantage over you.
Clearer objectives and "x item here" distract from the already easy pattern of going into every room and check each corner. It would not change what you have to do in a run, it would just clutter the screen with more garbage.
this game is nearly unplayable with how much motion blur there is
I have not really encountered motion blur in the strict sense. I noticed frame jittering when the game is having issues generating its frames properly, which I got around by turning Antialiasing to its lowest setting and putting on a frame rate cap. The game is not properly optimized for the level of detail it has, so I hope this will be done with more updates.
If they stick to the detailing of the models and textures, they don't need massive Level of Detail settings, Shadow detailing etc.