I absolutely loved the Pkimin 4 Demo. Having played all 3 prior games, 4 resonated better with more emphasis on exploration and removing the “you have X days” pressure. Made it far more enjoyable personally.
The only thing I really wish they hadn’t eliminated was proper co-op. My son was very disappointed that all I could do was throw rocks and items rather than run around the world with him.
Technically Pikmin 3 also didn’t have co-op when it first released, that was a feature added with Pikmin 3 Deluxe. However definitely extremely disappointed they removed it for 4. Maybe it can be added later, but likely not until they release DLC or another Deluxe version…