We added O'Neill and Grissom as starters, and when counting O'Neill in RF, I agree. I do see Grissom as an upgrade on D, at 2B, but nobody knows if he will end up being a plus, there.
Cora did end up making Rafaela the starter, which was a plus, on paper.
He moved Yoshida to DH and Duran from CF/LF to just LF, mainly. That was a plus.
He left the worst 3Bman at 3B, the worst 1Bman at 1B and our catchers, the same.
The SS situation is what it is. The subs have been horrible for years. (He did replace Bogey with Story as the starter, but injuries killed that plan.)