They've gone from abhorrent to watchable.
I also said that it's short lived and has been forced on Koeman by Bolasie's injury, so I dont think we can make any declaration about corners turned stylistically.
As far as I'm concerned, and what I know of him, this is a very un-Koeman like style of play we have at the moment, apart from the work-rate demanded. We'll see next season whether he reverts back to some midway point between this game we play right now and the long ball muck served up for most of the season. As said yesterday, I think that will be dictated largely by Lukaku's decision to stay or go. If he goes I expect a vastly different type of striker(s) and a much different approach to our attacking play.