To this day, whenever I hear the term "supercomputer", I can only visualize the Cray. I don't want to know what the latest supercomputer looks like, because I suspect it's just another boring bunch of rack aisles. Maybe with a snazzy color end-cap or blue LEDs on the doors.
Bring back the impractical, space-eating circular design! I don't care about space efficiency. It's supposed to look cool.