This is a unique look at it.
The idea is to teach people other languages if they already know English, this way there is a higher possibility they can pay for it and already know 2 languages.
Targeting the Northern Indians coming to South like Bengaluru, Chennai and Hyderabad, may be new job opportunities or further education.
Most importantly as Duolingo uses the owl mascot, I wanted something for Bhasha as well so the peacock. And for the colours, I am trying to make it colourful and eye catchy so more people will explore it. At the end of the day it will be a small game based learning just light Duolingo
But your insights are appreciated. Could you go about more on what 4 language families you are talking about?