Don't understand what the hesitation is in letting Rothschild go already... the evidence is mounting that it's him and not the pitchers.
If Nido has to go on the concussion DL (which they probably should do regardless of severity), Rene Rivera is a good option as a 3rd catcher. He's caught everyone, except for Stroman, and was a calming influence behind the plate while on the Mets. Not the worst option