My understanding was Varsha is contracted to speed... What with all those Barret Jackson auctions to cover afterall
I prefer Varsha over Diffey, but not sure how often he will be back.
On the otherhand about the Vettel/Webber thing.. Think back to the Senna/Prost days. Senna would have taken the position, won the race and likely a championship. Prost would have listened to orders and whined instead. Webber listened to orders. Vettel will likely be champion again. I don't like it, but at least it proves him hungry still to win. Its easier to ask for forgiveness than permission afterall.