If Arnold can get something of value for a player he thinks has no future in Milwaukee, great, but trading anything that the organization values is basically pointless. I don't know there's any offense in MLB that, come playoff time, beats the Dodgers starters 4/7 games. To think this team's offense would is fantasy. Trading anything of value for a 5th tier SP isn't going to change a thing. And frankly, even if the impossible happened and they worked a deal for someone like Buxton, I don't think that's enough to beat the Dodgers.
I hate the "Best Farm System" championship as much as anyone, but there's legit no way this team as constructed beats the Dodgers in the playoffs, so keep the powder dry for another day.
Problem is unless significant changes (that I don't think are very likely) happen, I'm not sure that "another day" ever comes. Cheapskate owners hate a floor as much, or more than, players hate a ceiling, and without a floor, the cap is pointless.