Yep, no react native support is maddening to me with intercom. A dealbreaker.
I'll pass this convo along to the Messenger team. It sounds like a worthwhile thing to look into since RN is becoming so popular.
In addition Messenger I'd also add Mobile Carousels. A pure JS Expo SDK is needed to support these. I think you'd be surprised how many apps are mobile only these days and would love to use Intercom, but are turning to other options like this instead.
I spent a week coding my own implementation via your API. It seems like a react-native dropin would be very popular.
Feel free to reach out if you'd like to talk more about it.