Finally took the ArcPro plunge this week after being in ArcMap/ArcGIS since day one. I must say the Dark theme totally rocks and was much needed. Love the workflows and ease of use. That said, I will be going back to ArcGIS as the ArcPro Legend workflow and functions are too limiting. We produce figures and maps on a daily basis, and simply cannot be hamstrung by such glaring lack in functionality. Fix that, and we will all make the switch.