The loss of being able to easily mark a clip was a huge bummer for me as well.
You can still export markers from Premiere, but I don't think we know yet what formats will work correctly with the "new" CC markers. I hope that the only change they made was in the GUI, and that the actual technical information being transmitted in the xml files is the same.
And it was a bit of a point to update markers. But no question; dynamic link was a very useful way to work interactively in creating DVDs and Blurays. Even if you abandoned it in the end and used exported files.