Please, no. Leave Busch alone at 1B. It's fine if he needs to fill in at 2B/3B in a pinch, but let him primarily focus on hitting and playing ONE defensive position.
Whose fault is it then when a big ticket free agent signing doesn't pan out? Neris being bad is absolutely on Hoyer. Did anyone think he would be THIS bad? No, almost certainly not, but his signing was a bit of a head scratcher from the start.
When near 7 ERA Kyle Hendricks at 100+ pitches would have been a better option in the 8th inning than the first guy out of the bullpen, what does that say about the bullpen?
There is being overmatched, and then there's looking like you have absolutely no concept of how to approach an at bat. Unfortunately. PCA falls into the latter category.
The only one I possibly disagree with is Ballasteros. The Cubs catching situation is dire right now. IF Ballasteros can handle catching a Major League staff, and that's a big "if", then I'm not opposed to taking a chance and giving him a shot.