What I most want to see from Esri is a road map of planned features that are/will be implemented with Pro. Then we can see what is coming and [generally] when. Maybe the grand plan is that everything in Desktop will eventually be in Pro, but I haven't heard anyone at Esri actually utter those words. A road map might at least allow me to plan when I could effectively transition, and submit specific ideas for things that I don't see on the road map.
If such a thing does already exist, please let us all know of the location!