I'm probably missing your point but I'll expand on my suggestion nevertheless: I'd welcome a discussion of the possibilities of variable fonts for scripts other than Latin. I think exploration in this area has been rather sparse so far and the interaction between fonts and layout engine seems to be the reason the development of variable fonts for Arabic is stalled. I appreciate this might be common knowledge for you but it might not be for the majority of the TYPO Labs audience. If this topic isn't of interest for you, you can always sit that one out.
Thanks, Ana. I'll make sure to spread the word. FWIW, I'd like to see @Sahar Afshar talk us through variable fonts for justification in the Arabic script, perhaps someone else (Roozbeh?) could talk about the layout engine's struggles with that.
You'll find that some of the points other people raised in this thread will be covered there. FWIW, I'm still very much in favour of accentuating a written language's characteristics and think you should continue your work in this direction.