Maybe its another toilet next to the Laundry....If not we could swap the bedroom and the lounge area at the front of the house.
Depending on the width we may be able to widen the hall to accomodate double entrance doors and then add in a nib wall somehow to stop this run from front to back.....
YOu will still achieve the watching the kids part.
To add to the list....
Double basins in ensuite
1 toilet in your ensuite and 1 easily accesible from the living area.
Lots of storage in all your rooms and Laundry
a well thought out placement of cupboards and lots of pot drawers in the kitchen.
Easy access from the garage to the kitchen....I can keep going. So we can do the list later.