Hedgefund narrowed it down and is correct....
But to elaborate, Some of the new Leaders have not specified instructions to new people. Regulars like myself, know what the Lead is asking, but it can get confusing if you haven't been briefed.
Item 1 is covered.
Item 2- using "1" as a response was just a way for the lead to see who is volunteering to taunt. Though I think would be a great thing to use a clockwise number system for the mitos, 1-6
1 being Front Left and last being front Right-- see item 1 answer. That way the Taunters can answer very easily. I'll pass the suggestion for Lead to explain.
Item 3- I would test for your self, but you need taunt right before the Attack team dives in, you need to have EOE's on hand, for me being a Brute and descent Tank, I need the EOE's or I will go down relatively fast, I have average amount of Regen. I have popped 6 in a row before due to a "Delay". EOE's don't stack so you have to watch for the drop.
Item 4- Hedgefund already mentioned........ I usually get in position directly in front of a Yellow Mito ( see Hedgefund details) and let it agro on me, if you go in too far you will agro the Blue Mitos and then may get End Drained. EOE is not as effective at mitigating Blue Mitos. On one raid, the Lead told Taunters to get into position and then i was there for at least 3 minutes, waiting and waiting and getting hit by 1-3 Yellow Mitos, just kept popping EOE candy. The times Ive gone down was because of not paying attention to EOE timeouts due to issues with communications from the Lead. Also if you aggro blue mitos just back up a bit.
Item 5- again, slowly decrease range to the yellow mito until it aggros on you, then move forward to your mito so you can get good Taunts a few secs prior to the Attack team dropping in on Hami.
If all the Taunters do this then your fine but if you end up getting too much aggro too early, it could become an issue.
Make sure all Taunters are in place and all taunt around the same time. Ive seen half the team get wiped because 2 taunters were not in place.
Once you see hami drop to about 50% get your hits in just to be 100% sure you get your rewards like Hedgefund mentioned, just try to keep agro on your yellow mito.
During the attack , Mitos may adjust to a particular taunter, I've seen 3 - 4 around me before but never cause an issue as long as i have that EOE up, by then Hami is usually burning down fast.
A lot of this is just my experience and observation performing the deed, if my assumptions are off a bit please correct.
The @Foxfyre's excellent Hamidon raiding guide, is good and give the basic 2 design plan but the one not mentioned is how its being done on Indom.
The Hamikaze style is the same as Zerg Hami as in the guide except that we don't bother with killing Mito's we directly destroy Hami after the 6 tanks hold aggro.
This requires between 60-80 toons. We destroy Hami 4 times in a row within approx 30 mins +(takes about 15-20 mins to get toons into 2 leagues) and went on to a 5th time.
Typically Ive seen the leagues do 3-4 depending upon Leads.