Having a good ticketing system is wonderful. I can see peoples point about the forum being more open and communicative and email in the past being horrible (because email is the oldest thing there is on the internet). But a good ticketing system should get rid of the bad parts of email, help keep track of things better than a forum, which is not designed for support. It will also allow for reference, accountability and tracking.
We will miss some of the interaction on the CS Forum, but not necessarily the things like "This book was missing" and "Order #######". I think that some of the things we will miss will show up other places, and the things needing a ticketing system finally have one. You folks did an awesome job without a ticketing system, I think that you will do an even better job with one.