for the record i am a horrible wizard all i did on that run was spam spells drink mana pots and abuse Tot's healing skills and personal pot stack
The strategy I would choose for this quest with perfect party make up.
3 heal specc'd high HP FVS (pref the race that gets unlimited searing light) each picking a corner of a triangle at a pillar for a base
3 ice savant sorcs to go on the pillars
3 rangers w/ capstone high HP and the UMD to use raise dead scrolls and stay with the FVS at their pillar
1 High HP Bladebarrier specc'd cleric to roam and kite trash effriti's
1 Shield using Evasion Paladin with high AC/HP/intim/healscrolls and ressurection scroll umd who manages agro and gets trash into BB of the cleric and possibly helps control the queen a bit (not likely)
1 high HP full songed out bard (sp song/ac song/max song duration and number prefered)
or
1 AC Monk with SP buff who would be the spotter communicator to the group
With 3 static teams hopefully 2 will be alive at all times to keep DOTs (DPS is not the issue in epic, its sustained damage over time that counts) up and raise the other dead members and quite possibly agro ping pong the queen between the groups. Meanwhile cleric is self sufficient kiting trash and pally bard/monk are there for emergency support.
If every member has evasion it would be better. I see a 5 mana pot buy in for every member minimum (60 pots seems light)
The final 10 percent will always be bedlam unless there is an effective way to control her freaky agro/speed