It seems to me that layout preference is very dependent on the intended type of boating.
Solo, or just the two of you, or family boating?
This dictates the space and arrangements for bedding,
And this heavily influences the required bathroom, galley, and dining area, size and configuration.
Heavily summer season dominated?
Don't need a stove, oil fired central heating will suffice.
But easy access and provision of outside spaces becomes very advantageous for a high proportion of outside living time.
Outside time in well deck or cruiser stern or both?
Intended extended stays?
Then laundry arrangements become a consideration.
Washing machine?
And drying arrangements, both indoors, and perhaps outdoors in a covered cratch.
Intended 12 months a year on board?
Then heating and heat retention, and fuel storage are very major considerations.
Solid fuel stove, where in the boat?
Differening layouts provide differing advantages to the intended modes of boat use.
Our boat was designed by the previous owner for six months continuous summer season on board, and six months winter lay up for 2, plus occasional 5 days max for an additional two people.
We had exactly the same use regime and it worked extremly well.
But this was a comparatively narrow operating regime.
It may also have worked, as a year round liveaboard, provided in winter it was on shore power, when electric heaters could provide the necessary, considerable heating.