Yes, exactly! This 90-pack behemoth (pack rarity division of 6-3-4-1-1 (c1-c2-u1-u2-r)) required:
c1, 60 unique cards, 9 of each (540 total)
c2, 45 unique cards, 6 of each (270 total)
u1, 120 unique cards, 4 of each (480 total). Additional note: One of the neatest things about VMA on MTGO was...