The biggest thing gone wrong with Cosmos Rocks is the lack of purity in Queen. The solo records had little influences here and there, particularly on Brian's, but they never had a direct musician writing into their everyday collective besides David Richards with the Barcelona project for Freddie, Eddie Van Halen for Starfleet, and the various members of the 2nd two Cross albums, the first being written entirely by Roger. That impurity changes it, and I feel that Roger takes a smaller role while May and Taylor are the two main influences.