I dunno, I never had a problem with Bill Andrews' drum tracks. They're not not as technical as the later drummers to play with Death, but they're not too bad. I think his double bass ability fit well with the style of the band at that time. I like what he plays during the last solo on "Within The Mind" off of Spiritual Healing.
As for Rick Rozz, I was never a big fan of his style but you have to admit that it was kind of unique in death metal at that time. He does have one cool solo on one of the songs on Massacre's Inhuman Condition EP though. I forget the name of the song, but he actually does something besides just whammy pulls during that solo. And no, I'm not getting it confused with the guy whose solo kind of sounds like a James Murphy solo, whoever that was.
I think the weakest link was Terry Butler, to be honest. I guess he did his job, but he doesn't really stand out at any point in time as a great bass player during any Death song that he recorded...that I can think of. Maybe I should go back and listen to Leprosy and Spiritual Healing to see if I missed something.