I'm a bit skeptical that we'll see the Polanco of old, but I do think he'll be a positive add when he comes back. If nothing else, it adds depth and pushes bench players back to the bench instead of starting them.
For me though, Kirilloff is going to be the biggest linchpin in how this offense goes. If he can come back healthy and produce from 1B, I think that's a big boost to the offense. I think this offense will go as far Larnach and Kirilloff will take them.