I wouldn't mind having it as an option, I suppose. However, I really hope the game is dynamic enough not to get people stuck in rotations. I do A, B, C, and then D. Repeat. Sure, some of that is ok, but if I find myself doing it more than say 50% of the time, the game tends to be a bit boring.
Though, this idea is hardly new. You could do it in FFXI using Macroes.
WoW -- Zaia -- Dragonmaw -- Mage 80 BABY! Alchemy 450
Also... Hunter 62, Rogue 52, Warrior 66, Warlock 43, Death Knight 70, Shaman Who Cares? ;)
FFXI -- Caia -- Retired/Deleted -- Blm 75, Alchemy 97
Pandimonium server - Rank 10 - Bastok
Zaela Rdm -- 35, Alchemy 45 -- Forced into retirement because I didn't have the right kind of credit card. Hope it was worth 18 bucks a month, SE.