Tau.Neutrino said:

This would make for an interesting study

Design of new homes to allow more freedom of movement hopefully to reduce domestic violence.

Most homes have one door for entry exit

What would be interesting, design 100 homes with two doors for each room, except toilet.

Look at 500 couples who have on going domestic violence incidents from that group

Place 100 couples into new homes, monitor domestic violence incidents to see if any reduction happens.

Take it from there.

Taking the study a further step…

Looking at it further you could add cameras to main areas, not toilet, bathroom or bedrooms.
Or allow bedrooms under strict conditions.

Look at the number of steps each partner takes towards or from each other, analyse that data using AI, compare the data from 100 couples with less restricted movement with the data from 400 other couples with more restricted movement.