The way we use the site, I don't see real-time group chat as an important feature or one that really fits the purpose. To me, it's like adding a built in food freezer in a car. I suppose some people might use it... but not us.
I'd prefer to see the dev people spend energy on making the core features more reliable and usable. I'd suggest an overhaul of the e-mail message system (bring back real e-mail functionality), easier photo management, group events, and search abilities. These are the important parts of the site for us.

