You don't know what the improvement was, for that you would have to have access to ch. 16 before they delayed it and after or inside information. There was a problem and they decided to roll out ch. 16 and fix said problem at the same time, that's pretty much all we know right now.
P.S. You don't make the forum rules or pay anyone else's sub(to my knowledge anyway,) so what anyone else post isn't really up to you