I think we might see Nick in one.
As for what they'd enjoy:
Frank would plain not enjoy being asked anything, he's really not an interview kind of guy.
Vince would enjoy talking about anything that has to do with his superhero persona. Also his hobbies.
Tim would prefer to talk city politics.
Emma would enjoy answering questions about Sentinels in general.
Vince and Tim would not enjoy questions about their families.