I happen to be a raid leader for this event so I know it fairly well now.
General suggestion: Down load OBS stdio and record each raid attempt. With out the replay it is very difficult to pin point problem areas.
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Kill order: Sprouting > Pitiful ( mez players ) > Surreal ( charm players ) > Spiteful ( Lot of HP but no tricks ) > Burgeoning ( Spawns 3x )
HP% adds at: 83, 67, 51, 32, 16.
You will also get timed adds. I don't have the timer on them but its probably every 90s or so.
Emote : Cactiikii shouts, 'My spines will find a target, KingArthur and Kingfisher.' --> Run away from the raid.
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I set up a campfire for the boss in an area along the south wall that is pretty open.
The renegade gets pulled to a spot 90 deg away from the raid / boss - I set the banner and a campfire approximately 160-170 away from boss / raid. Renegade tank gets agro and moves to this spot and tanks until the AE ring pops up - then they move.
We split the raid DPS as MELEE vs RANGE.
MELEE = Trash ( pitiful / Surreal / Spiteful / Burgeoning )
RANGED = Sprouting > Pitiful / Surreal ( If behind Spiteful / burgeoning <-> boss )
This fight is about maximizing your DPS and controlling when adds spawn. You do NOT want to a HP base wave happen when you just killed a Burgeoning and are in clean up )
I made a macro that announces the HP spawn points in raid from 5% -> 4% -> 3% -> 2% -> 1% -> NOW
I direct DPS to use burns before we go into a HP spawn wave so we can get through the extra mobs smoothly. If done correctly you will spawn the adds while everything is down. Then OT the burgeoning spawn ( no damage ) while the team bats clean up. It takes us about 1-2 timed add cycles to catch up from a HP wave.
Another key thing is getting the Sprouting down. When a burgeoning spawns, there WILL be a sprouting up. Your ranged DPS #1 job is to make sure they get killed before the grow up ( requiring more DPS )
From 30% to 0% the Boss will do emotes which do an 100-125' range AE DD + snare. All the bots need to be able to do these emotes.
From 16% to 0% we OT all burgeoning and focus all DPS on sprouting > trash > boss
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Hope this helps.