I have transitioned every workflow over to arcGIS Pro except for parcel editing because of this. I understand that ESRI intends for users to use the parcel fabric in ArcGIS Pro. That being said, I have tried to make that transition twice now and given up both times. The documentation that is available on working within the parcel fabric is disorganized and incomplete in my opinion. I spent more time spinning my wheels trying to figure out how to correctly work in the fabric than I did actually doing the work. I like the idea of the parcel fabric, and will continue to try and transition to it over time, however it just isn't there for me yet.
I would love to be able to use our old workflow to COGO polygons directly into arcGIS Pro until we can successfully make the transition. The lack of this crucial feature is the only thing keeping me from making a full switch to Pro. I realize that there is a construct polygons from lines tool as well, however that is not the same. I do not see why I should need to manage a separate feature-class for the sole purpose of being a "middleman" feature class. The ability to COGO polygons was available in ArcMap. For ArcGIS Pro to every be truly "equivalent" to ArcMap it needs to have the ability to COGO polygons.