Reading the suggestions about form factor in the white paper, I'd love to see full-height 5¼" drives spinning at 10K that look like their MFM ancestors, only ha

Reading the suggestions about form factor in the white paper, I'd love to see full-height 5¼" drives spinning at 10K that look like their MFM ancestors, only having ~200,000 times more capacity. :) (Also, the part which discusses hybrid SMR drives that allocate a conventionally recorded section on the platters for GC and hot/cold data separation purposes – would a small SSD be applicable for this functionality?)