Needs items in the shop that can be bought multiple times to increase happiness, because on my 3rd dog, i've already bought everything in the shop, so my dog gets sad quickly. These items would be like 'bone', or 'chew toy' costing $20-$100. There could also be a place to get loans if you run out of money. These would probably be at very high interest rates, but it would give a chance to people that don't want to sell items or retire their dog. Other than that, this game is just like the other greyhound tycoon games, except better overall.
The only way to change your stats is to equip different equipment. Some equipment gives bonuses or penalties to charisma.