Regarding the Twelve and their relationships
I'd assume that whatever change dynamis potentially has on the Twelve, it isn't affecting their relationships. Althyk and Nymeia don't seem to be incestuous lovers, Byregot calls Rhalgr his Master (even though Thaliak is supposed to be his mentor) and not his father, and Halone doesn't seem excessively bitter towards Nophica in any way whatsoever, they actually seem to have a pretty close relationship. I think the only confirmation we have about the Twelve's relationship is that Althyk and Nymeia are siblings and that's it. Everything else seems to just be beliefs, and these beliefs don't seem to have any real effect on the Twelve.