He's an excellent player. Because we look better as a team, I'm sensing an implication that he became good a few weeks ago.
Bailly and Blind are doing the same stuff Smalling and Blind were doing last season. Bailly has done well so far, but if we're going to replace Smalling and Blind with Bailly and Blind, I'm not convinced we needed a change at all, especially not for a younger and less experienced version of Smalling. I believe Smalling is the better of the two, although, Bailly is a better passer to be fair to him.
Blind is pure class, and has been one of my favourites since he moved back to centre half.