Keon is just a better version of Arcia (better defense, better offense), so I don't see why it's crazy. Having an elite defender in the outfield at Coors is more valuable than you may realize. Removing one of your hottest hitters in Braun, who is still a big presence in the lineup that is a threat to go deep every time he steps up to the plate, after 4 innings and taking at least 2 maybe 3 at bats away from him is the major downfall. I would want 3 extra at bats from Braun over Broxton every day of the week. That's completely reasonable and it's what Craig is going to do, but it's not ridiculous to prefer Keon in a stadium where outfield defense is huge. For what it's worth, Braun was worth 1.3 fWAR this season in 125 G, and because of his defense Keon was worth 1.1 fWAR in 51 G even with a down offensive line for him. And keep in mind Braun is at his least effective against RHP.