This is really helpful feedback, thanks!
Someone earlier suggested that the deliveries for each person should be done more specifically, which I was hesitant about since I thought it might just make things more arbitrarily tedious for the player. However, having a points/combo system actually sounds like a good encouragement to gather more berries at once without it being a necessity. Remapping the controls to WSAD, Q, and E is already on the table by popular demand, although I didn't consider having a left-handed layout on top of that. I was originally going to have some sort of additional gimmick each zone such as flower springs in the pink zone, or rolling snowballs in the snow area, but all that made it into the final game was the water in the beach. I may try adding that stuff in to a later update.
Thanks again for the comment!