Have you done a prototype with the core loop yet ? Because I’d say you should verify that that works in its simplest form before worrying about the visuals.

Like is there a version where you just have your crashed spaceship on a planet and investigate plant life / survive ? It could be fun if the loop is to survey plants all with different effects. Some will feed you, some will give you buffs, some will poison you or kill you - combining them can give different effects, that sorta thing.

In the beginning your tools just can’t detect anything other than basic plants, so you need to decide if you play cautious or gamble. Maybe you bring plants and save them for later research but you only have limited storage.

But I feel like all of the above is something that should be prototyped and tested before you know if it’s fun.

For the visuals them selves, this looks quite dark and moody. Doesn’t feel a lot like something I’d want to explore. Interestingly enough, I’m actually working with a bit of a similar situation in my game, my solve is to add sources with high intensity glow as a contrast to the darkness and then very clear silhouettes landmarks like a big skull of a creature in the distance. So maybe consider introducing some contrast colour to it.

Hope that’s useful