Very exciting to be able to design from scratch!
When you come into your home through the front door, you are met with utility room, storage, and a blank wall. It doesn’t feel naturally welcoming.
Where is the garden? Will there be a big door / French window / bifold from your big reception space to the garden? I would want this.
Are you OK with all the front aspect windows being kitchen / bedroom / TV ?
Where will your outside bins be? What areas of the house will you carry rubbish through to access them?
I would put a good shower in the family bathroom in addition to the bath. Once they are teens they need to be in and out of showers quickly.
Do you like to linger in a bath? In which case everyone else will be traipsing to your en suite while you are in there.
I would make it so that you have the option to close off the main reception from the kitchen diner: sliding or folding doors or whatever.
Is there a sky light? The windows look small.