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Personally I consider grounding totems and stoneclaw totems as a form of CC. They nullify the damage of one or more mobs for a period of time.
If you can just walk through an entire instance, pull all the mobs you want and not have to worry about crowd controlling anything, then you probably outgear the instance and should be doing something harder (unless you are farming gold or rep items).
If you are at that stage - doesn't it bore you?
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Stoneclaws are a form of CC, I wouldn't qualify groundings as such - if grounding totems are CC, then you could put priest shielding in the same and to some extent even healing or tanking gear etc. Usually CC is referred to as incapacitating a mob - if its a caster mob which only uses targeted spells and doesn't melee, then yeah, I guess groundings can work as CC.
Not needing CC doesn't mean you outgear the instance. When I started doing heroics i was in 90% blues and I didn't need CC, so i didn't in any way outgear the instance.
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No CC is needed in any of the WOTLK instances, regular or heroics. You won't really need hex either, I don't recall using it once in any instance and I've run 3-4 of the heroics on beta.
A tank however imo is going to be very useful, the mobs hit very hard and you may even want a healer spec'd character. Most of the boss fights are not tank'n'spank but do require mobility, movement, and target switching so a shaman team is still very good. Cloth teams or a tankless team is going to have harder times, imo (talking mostly heroics).