The changes they made were intended to improve the station's performance in 25-54 (as opposed to the strong 55 and over seniors-centered core they used to have). It seems to have worked, with significant improvements book to book over the last three books since the changes were made.
The station has moved up several rank positions in 25-54, and is far more competitive on transactional buys. If they do any more changes, it will be to eliminate the hundred or so pñre-1974 songs they still play in regular rotation and to increase the percentage of late 70's and 80's songs to further flush out the geezer demos.