I said it before, but I wouldn't hate Rex as the DC.
Then there's this, the guy is would be coming in highly motivated to make a difference even if that motivation is him looking out for his own best interests. Still, coming in motivated like that could make a positive difference.
Also, his system would be great for Micah as well.
There's definitely some positives to bringing him on as DC so I'm ok with him or Zim.
And lastly, at the end of the day, I still consider next year largely a wash year so unless the guy they bring in is terrible, I'm not gonna be overly picky about this move.