We are adding onto our house. Mud room, kitchen and living room walls will stay as is existing. The walls from that point on will be demolished and the addition will be added on giving us the bedrooms, bathroom, and laundry room. What kind of things do you see that you would change? We can't add any more area than what is shown. BTW - we have 2 boys who are 8 and 10 that would occupy this area along with my husband and myself.