Changing the name is certainly doable, in a few different ways. Some of the changes can be made from the admin settings:
This would allow us to change the title tag on the home page, the sender info in emails, the sender email address etc.
To change the URL we’d likely need some help from @seanperkins - here is an article I found that describes the process for changing the domain name https://meta.discourse.org/t/change-the-domain-name-or-rename-my-discourse/16098. Is this something you could help implement Sean? If we want to change the URL we should definitely do it before the community is opened up wholesale to more users to avoid confusion or people being routed to deprecated pages.
@deborahchang - what would the ideal new URL be? are you thinking something like nycedu.hub.org or hub.nycedu.org? what do we think about keeping the #NYCEDU logo but then naming the space the “The Hub” or whatever else we decide on that way there is still some brand association with #NYCEDU even if the community has it’s own distinct name?