Indianapolis just needs to get older. They're ridiculously young everywhere, a consequence of shedding nearly every veteran they've got.
As far as Denver, who I pay closer attention to now that Peyton's there? Get a real running back. One that can reliably take the ball and get 10+ yards when you need him to. Peyton could use a break from carrying the team on his shoulders. Coaching can fix the secondary issues, but coaching can't make running backs have more natural talent (although it can fix pass blocking, which was sorely lacking in the Ravens game).