aesthetic balance always is a balance of personal perspective.

e.g. pictures/graphics and type

more chaos – combine with sans.
less chaos – combine with serif.

yes and no. it depends on your personal view of chaos
and your handling with different layers of disorder.

e.g. more chaos – combine with sans. but why combine, it is already chaos.

e.g. some chaos – well this is already kind of type. maybe you only need little signs.

e.g. less chaos – combine with serif, but in this case sans and capital would be great.