I would like to see really immersive gameplay, the slightly cartoon art style is very immersive (but realistic graphics would be just as good) so is the inclusion of storms and stuff, but I'd rather them be realistic storms and not whatever the electric bubble thing. I'd also like the machine's animations to look less cartoon, and I'd like the jingle sounds to be less cartoon too. I'd just like the game less cartoon (but not enough to ruin the immersive world) or get repainted with a realistic art style.
Also, I'd like the character models made slightly more realistic and have it's face be completely covered so when you're in multiplayer, you don't look at the character model and see some video game guy, you just see whoever you're playing with.
As well as this, a large map would be great and maybe even the tower showing you where to go, I sorta like how the game directs you around and also lets you play freely, so being told where to go but nothing more would be great. This could be an awesome ice cave with an exclusive resource in it for example. Going to this location should feel like an expedition, you should have to travel for days and camping out with campfires and tents during the night, and walk during the daytime. You should have to repeat this 3 or more times per distant location, and the night camps should be permanent, so when you need to go back to the location, you already have the shelter you need. Due to this, getting the time right should be emphasized, when you plan to go back somewhere, you should have to leave at the same time you originally left at so you make full use of all your camps. When you get the location, you should have to set up a more professional camp with metal shelters and storage bays etc, and should have to spend multiple days at the location, collecting resources for example. Maybe if you're playing multiplayer, you're encouraged to set up shifts, such as one player collecting whatever resources you need to survive until the same time the next day before joining the others in whatever the special location gives you.
I'm personally just looking for immersive, innovative features like what's above, as immersion is what this game should strive for in my opinion.