I'm crafter 23 atm. I installed that mappack addon and use it a lot.
Once I looked at the map searching for something I don't remember now. And by chance I noticed that dragon cargo disks trainer icon near New Rachival and Tazoon. I've already seen those unusual disks in the game so I went there and found the trainer. He started to give me quests and eventually gave me formula for disk making.
But I wonder how could I even know about his (trainer) existance without mappack? Nobody of dragon trainers mentions him. He lives in cave far from any village in the middle of desert.
May be it's worth to add some hints in the game that he is available and where he lives. If there are already such hints please let me know who gives them.
Thank you.