Hmm,

so you've dropped the OOP in HGE and made it entirely procedural. Honestly I'm not sure how I feel about that.
I suppose it may have to do with making language bindings more easily?

About the roadmap. My oppinion is that you should focus on making documentation and examples before adding new features. It may not be the most interesting thing to do, but I think HGE will benefit from it in the end.