Energy is too little. I can play through all of it in five minutes. Then that leaves nothing to do around the site. Solution maybe give more energy, or make it easier to earn more energy quicker.
Also, taking care of your horses uses too much energy. There's no energy left over for building or clearing weeds and you have to sit there for half an hour before you can complete anything. Perhaps have things like hooves/grooming as one thing. And considering you have to use energy to gather treats, then use energy to give them, maybe have only energy used to gather and not to give.
Money is also hard to earn considering how slow energy is gained. I can't complete the quests at a reasonable pace as I'm sitting there tapping my fingers waiting for energy to refill so I can do all my horse activities to enter it in a show/use the petting farm to earn a few bucks. I'm supposed to buy a Standardbred for 7,000 and there's simply no plausible way I can earn that much.
Also, some of the pricing is ridiculous ... 300 to buy one bit of path? Normal games like Ski Tycoon or Zoo Tycoon or anything only have, like, 10 for each bit of path.
I'd love to be able to play this game properly, but at the moment it's too slow.