In Dragon Commander your supposed to be able to do whatever you like, you can conquer Rivellon or form alliaces. So it's up to you how you choose to play it, well that's what they've said so far anyway.
As for the DKS Dragon Knight, maybe in the future the Dragon Knight will take worthy people to the patriarch. In DKS however the fact that you were the last & the name of Dragons was thought to be a name of disgrace your pretty much busy trying to show people that theres nothing disgracfull about the name. So maybe now that the name of Dragons has been redeemed maybe we will see more Dragon Knights in the future.
