Adding my two cents,
I see that Graphisoft is on a difficult road fork related to GDL accessories and legacy code, in one part I like the idea of the ability to extract info from AC using GDL and not API (since it’s difficult and we lack a manual for people with null experience as myself) and on the other part I understand GS stance of not investing in legacy code for the inconvenience that it may pose.
What if GS, made a renovated accessories code, something that is built from the ground up, and giving your clients the possibility to migrate their GDL objects from the old legacy code to the new code ?