Hi , the plugin is just in planning at the moment so early days for such things. I am currently making some prototypes for how the batched renderer can work with the underlying Unreal renderer, while still remaining a plugin. I will post some updates about this when I have something I’m happy with. It is important to get the design of this right as everything else will build off off how this works 
Reg a public github repo, this is a commercial plugin, so that is not possible, but I will be providing full source through the marketplace. Trello roadmap is a great idea and I’ll get one set up a little further down the road.