Okay, that update came fast and it's great! You already included foxes, fast moving squirrels (good idea), a day-night cycle, a new power-up (a bit op) and also guests!
I think you have enough ideas and inspiration and my only new idea would be an enemy that circles around the campfire with a decreasing radius. One 'problem' though that you might not be aware of: The best strategy I found is to harvest trees, clicking on each one three times like a berserk. When the screen is full of stuff and the fire almost extinguished, you have enough wood to refill the campfire and satisfy a guest. Then repeat. My mouse and my index finger feel abused now... but I got over 2000 wood, 70 health packs, 50 campfire lives... :D
What you can do is to maybe spread the trees all across the screen (more than 3, 20?). This makes it more like a forest and less efficient to only harvest the trees.
That's just one possibility, do what you feel is best for the game, don't overwork yourself and have a nice day! :)