Of all of my designs, however, I find myself drifting away from hard numbers of cards in a cube, more in favor of variance.
Only really the Pauper 540 is bound to rigid numbers of cards, i.e. balanced colors, specifically 540 cards (not including its cool artifact land seed). The rest have some extra here and there.
I used to be very design-driven about that in particular as I've been known to be practically neurotic about some kinds of symmetry or proportion, but this feels kinda right. Weird, but right. After all, it's just a pile of cards to play with right?