I disagree here. From my initial assessment this raid will have absolutely 0 need for an arcane at all. I’m fine with a possible reduced role, or favoring one archetype over another, but this raid is EXTREMLY pointless for an arcane. From what I can tell there is probably no reason to bring in even one sorc, wizard, or warlock.
I don’t think the raid needs to require heaps of casters, but a role for at least one or two to be able to contribute in some meaningful way would be a change for the better. While I enjoyed this raid, I could easily see this becoming the next RSO or DoJ level of hated raid due to a) repetition and b) exclusion