I see.
To be honest, while "reviving Tremulous" is certainly a noble goal, it's a vague one and you're not going to get anywhere by following it. For instance, consider what would happen if your project was to succeed. Would you truly be reviving Tremulous? No, you'd have a separate project and Tremulous proper would be gone by the time you made your first release. You wouldn't have the same servers, and the community would be nothing like you remembered. Most of the people that left Tremulous have been gone for years now and they've moved on with their lives. You can tell from how dead these forums are.
Instead of "reviving Tremulous" try to consider what your actual goals might be. Are you in this for making new models? Do you want to improve the gameplay of Tremulous, keep it the same, or make something entirely different? Is this just going to be a fun hobby project or do you want to make this into something serious? Have any of your team members worked on a project before, or is this your first time? Make a game design document.
Undertaking a game project is an enormous time commitment on its own. You will need to spend a very long time getting everything together, even just for your first release. It's very difficult to attract team members that will stay with you for a long time unless you're paying them, and even then that's not guaranteed. You will need to constantly show off new assets to maintain a community interest in them. If you go for a long time without showing anything new, people will lose interest in you. Thus, showing off your first release will be a pivotal event that you will need to schedule carefully. Hype is something that is difficult to build up and easy to lose.
As it stands, there are exactly two successor projects to Tremulous. Unvanquished is the one I'm from, and we're an open source project with two years of monthly alpha releases. We began around the summer of 2011 and we seek to gradually create a different game. The other project is Murnatan, started by Rotacak from the RCZ server. He began a year ago, and his project is commercial. I don't know much else about his game, but from what I can tell, he wants to be more of a direct Tremulous successor.
Regardless, good luck and see where it goes. If you want advice from someone behind a long-term project, go ahead and ask me because I can tell you what the common pitfalls are and I've seen everything.