Shifting from Unity to Babylon.Js

My company is considering to shift our focus to Facebook Messenger games. We have been using Unity until now and were wondering if we could shift our already made games to Babylon from Unity using the Unity Exporter plugin.

How easy is it to use the Unity Exporter to import assets from unity to Babylon?
Is the support for Babylon, in the case of Messenger games any good?
Suppose we want to make a game, what all can we do in Unity before we would have to shift our game development to Babylon.JS?

Well first welcome:)
The Unity Exporter is developed by a community member (MackeyK24) and it is really good.

It will not export c# code but it will let you do TypeScript coding inside Unity.
They are already several Facebook games using Babylon.js

Just in case you missed it: