Yes. Cancerous. It wasn't "highly mobile", it was "immune to any sort of movement punishment". Hunters back then in AotF times were basically ranged melee, who had 100% uptime no matter what with no downside whatsoever - it was flawed design and it shouldn't be allowed in the first place. The only weakness of ranged characters - their inability to deal 100% of their damage on the move removed not by a cooldown, but by a freaking toggle. It's ridiculous.
And yes, you could do a 1 button MM rotation, i even had it stored on my hunter alt:
#showtooltip Steady Shot
/cast [target=pettarget] Kill Command
/cast Silencing Shot
/castsequence Steady Shot, Steady Shot, Steady Shot
/castsequence Chimera Shot, Aimed Shot
/script UIErrorsFrame:Clear()
And i probably got it from this very forum, and i was able to sit at 4-7 spots on meters (we weren't best players, but this is borderline botting when you bind it to wheel scroll and just run around with wasd)
Oh yeah, disregard all of that, i'm retarded and was complaining about cata hunter, not wotlk one. But one button macro is definitely from wotlk