Great stuff! Looks very neat!
I like that the heading image is no longer the initiator, I always found that weird (and "had to" hack it on the Zurich community page 
).
I have one very important request: the "Join this community" on top probably leads to the community join request process that we have now. We find it works much better to link there to our Slack-In so that you can auto-invite yourself and get in the conversation without any further ado. So, my request would be to have that button's target link customizable if possible. I really don't think joining a community as it is now is more important than joining the conversation 
Cheers!
Gonzalo