I think HTTPS should be a top priority right now. It's easier than other items on the todo list and offers a lot of return on that effort. New users will build the brand for you. Unencrypted access to crypto-coins just sounds... wrong.
You could give yourself a major partner and a huge new userbase by developing Unity support. And it's not like you'd have to cultivate a relationship with the Unity team to do it. It would offer a lot of visual/audio options HTML5 can not compete with. Ingress with coins at stake could be huge, but that'll never happen in HTML5, the client can't be secured properly, and WebGL is garbage next to native code versions of the same.
Good luck! I feel bad for sounding so negative now... I know as well as anyone that development is easy... from the sidelines. But the details are tough so I'll try to be patient.
I can help with the demo vids if you want but you'd have to scatter some Geo around columbus ohio for me to do it.