I've finally finished developing mine as well!
I have a Minecraft server-based gaming community for spanish-speakers. This project started since 2010 but just a few months ago I gladly found Flarum, migrated to it and started to work in the development of my own customized Flarum.
I have used most of the Extensions provided here which boosted the utilities available for my users and I'm really thankful with those developers who took the time to make everything possible for us to have so many tools: Luceos, XEngine, sijad, Davis, etc, and the people who had aid me in my different support posts.
My link is: http://walkingplayers.com/foro
Happy to be a Flarum user!
Moderation: Link not a Flarum instance as of Feb. 2019