Language barrier
Humans on NewEarth speak Universal, or a version of it that has emerged after 200 years isolated on a planet with little communication with outsiders. I imagine it is as different from Universal as say American is from English. However my point was that the dragons face another language barrier. Not only are they all mind speakers, but their language is very different. To effectively communicate, the dragons must learn Human and the humans must learn Dragon. That is going to present a bit of a challenge as we begin to see in Heron’s Bonds.