Firstly, let me just say how incredibly simple it was to get multi-boxing using your step by step process. I was literally up and leveling in about 10 minutes.
I'm not entirely sure how much work would go into it, but would it be possible to get a setup without raid mechanics? Something simple for just leveling from 1-60 perhaps? I've noticed odd things happening with lowbie characters, such as the mage not casting and the hunter doing melee instead of shooting.
It's just a thought for people starting out. Then people can switch to your more advanced macros for raiding.
Also check out my vid on how to make your hunters back up.