I just cross-graded yesterday (full price is outrageous, but offers are more reasonable), and tested it few hours.
As a user of Finale and Overture 5, I didn't find the new Dorico Pro2 system better or more convenient yet, too much limitations and strange options, but I decided to invest in it in the hope that hybridation with Cubase sequencing was maybe more solid and in the close future powerfull enough for my needs.
Up to now the MIDI sequencing is not finished yet (the part I was really interested in, because I don't have to publish my score, but producing a good MIDI rendering directly in the composing score is still my dream: only Overture 5 actually really do it, but it's not yet stable or engineered enough).
The interaction between the MIDI data written in the PIANO-ROLL and CC lane, and the one generated by expression maps and other default interpretation algorithm is out of control, a MIDI definition of the graphic marks is impossible out of the Expression Maps system, and the way the program manages the Dynamic is unlear: the most important thing is the velocity can't be controlled and edited independently, and the way the default system do it is disputable (e.g. you pick CC or Velocity, as main dynamic control... but what about all the lybraries or VI using Velocity for attack, and CC for expression? etc. etc.).
At the end it's still possible writing or importing Expression Maps and adapt them with simple editing (e.g. legato and sustain have slightly different definition and must be rearranged in Dorico format if you import a map from Cubase) and for the very generic tasks it's possible to get decent playback reducing to Keyswitch only the Expression Map activity, and editing dynamics manually in the CC lane. But it's not the easy, authomatized and streamlined workflow you should expect from this Brand, at this price point.
Let's see what's the future, it doesn't seem to be rocket science to adapt some Cubase features to the actual Dorico Pro2 application. I hope they won't limiti it just for marketing decisions...