G4 Cases Holding Back Clustering Acceptance?

Mr. Quick writes: "An article at Wired talks about how Mac hardware is well-suited for clustering, but is being held back by the sexy cases. This follows closely on the heels of Apple releasing an optimized version of BLAST. Producing rack-mount *blades* is not in Steve's vision of world domination, but the opportunity exists. I, for one, hope that apple seriously considers developing a rack mounted dual-G4. Quad G4 maybe?"