There needs to be a way to remove dungeons from roulette?

[Granyala]

Honestly, I've seen more struggles with giant pulls when people forget they're synched down to i440

The trick for the first groups is:
The healer stays behind until the shadow Exergon locks onto another target. Then the healer sprints in and insta heals the tank. Tank needs to use CDs to bridge the gap.
If you do this, the healer doesn't get the debuff and the mass pulls are nice and easy.

Only mass pulls that hit a bit harder are the ones before the last boss but CD usage takes care of that.