By and large, all R&D departments are by definition there to push the envelope (To develop: to expand by a process of growth; to determine the possibilities of [mtg in this case]). They are usually also at the behest of a very powerful department: marketing. That's a nasty combination, and isn't unique to WotC's R&D dept, having worked in one myself.
So we can tout the mythical power of MaRo all we want, but I'm betting dollar to a donut there were other more powerful forces at play here. I'm also guessing the feedback from MaRo and others was what kept it to 5 rare legendary creatures.
So we can tout the mythical power of MaRo all we want, but I'm betting dollar to a donut there were other more powerful forces at play here. I'm also guessing the feedback from MaRo and others was what kept it to 5 rare legendary creatures.