I opted for wireless network, coz it saves me cost & unnecessary devices at home, I think Airtel provides multicasting STB, but not available in my place.
Also internet connection with STB opens up unlimited options with internet TV's becoming cheaper these days. You can share Program listings with friends(twitter, FB integration
) and for many tv's with skype/youtube support it will be a boon.
As sujoy said, media player capabilities would be a great add-on too.
Even though torrent support would be great, I don't think it would happen because of the copyright issues involved.