JBJ is my favorite player, but I'd be fine with replacing him with a defensive CF'er who can hit better than him. The new guy doesn't even have to be as great as JBJ on defense: he just has to be real good on D for me to like him.
How do we find this guy? Our budget is tight. Our OF on the farm is far away. We can't trade anyone without opening a hole or weakening our future even more.
Yes, his OPS sucks, right now, but I have faith he'll get back around .700 and maybe higher. If he stays under .500 or maybe even .550 for too much longer, we'll replace him. No great D sustains .450.