I think it's inevitable that in the approaching years that 1 or more of the top teams will opt for hiring 2 "great" drivers.
Just like in the 80's and early 90's when there were more great drivers (Senna,Prost,Mansell,Piquet) than competitve teams,except now it's Vettel,Alonso,Hamilton,Raikkonen.
We had Mansell and Piquet at Williams in '86/87
Senna and Prost at McLaren '88/89
Mansell and Prost at Ferrari in 1990.
Imagine if Senna and Mansell drove in the same team.. I would have loved to have seen that!
Which 2 great drivers amongst Vettel,Alonso,Hamilton and Raikkonen would you like to see in the same team?.