The Office is sooo good I really think they could do it agian. I personally think Extras is better than the Ofice(UK). I think if they kept the seasons short like maybe 12 episodes each year they could get someone big to star and being in America the guest stars could get even better.
Will Ferrell/John C. Rilley as Andy
Christine Taylor/Kristen Wiig as Maggie
And Will Arnett as Darren.