I like the idea of Corruption and Doom as mutually-exclusive (as in, can't have both on the target).
Maybe Shadowbolt, Corruption, Hand of Gul'dan as caster ... Demonic Slash, Doom, something other than HoG to place the Shadowflame debuff. Have they dispensed with Carrion Swarm in favor of whatever that newer spell is ? I've sorta given up following what they're doing with Demo.
React to MC procs in both forms.
I dunno. I wasn't thinking of coming up with my own framework for the rotation(s), since it doesn't really seem like they want completely-separate rotations. Or really, I can't tell what they want. Maybe I should post on the official forums ...