Denver Post sports writer Patrick Saunders with the latest installment of his Rockies Mailbag. Pose a Rockies — or MLB — related question for the Rockies Mailbag. Recently, your esteemed colleague, Kiz (columnist Mark Kiszla), suggested that the Rockies should move Kris Bryant to third base, a position in which he has a lot of experience and has been successful. Have the Rockies even considered this possibility? If not, why not? It seems to make sense since third base is still a question mark. — Tony, Greeley Tony, that’s a great question. From what I have been told, Bryant was…