1. I just straight up missed the Flask. The game looks gorgeous, and there's so much to look at and admire in the beginning that I just didn't see it.
2. I don't think you need more shrines, but adding a refill of ammo would be great.
3. Melee didn't get used much mostly because of it being tied to pushing in the right thumbstick. It was also a bit weak so it didn't feel too useful. It could be stronger, or possibly add a pushback to enemies to make it more viable of a solution.