Speaking of cheese, I thought of a cheese-obsessed pony named Wally Wendslydale, who is also an absent-minded inventor and has a dog who is silent, but sensible. One possible story would involve a thieving penguin "cleverly" disguised as a chicken. (Also, Princess Luna enters Wally's dreams to tell him the moon is NOT made of cheese.)
Thankfully it seems they don't forget AJ's hat and freckles as much now. The animation has really taken a good turn with season 3 and the quality of the flash models are leaps and bounds over what they where before.