Theres a few things on I dont really agree with.
First, although I have neither so I have no room to say, but I feel like the Fire runed robes look better than the other avatar robes, supposing that second 7 spell crit really is supposed to be crit bonus. Both are amazing robes so its not really an issue, what I dont think is right is the t3 fabled robes place on the list. Unless the proc on the nethersummon robes is putting out some crazy numbers I dont see how that comes close to to the robes below it. Unless you're looking at it from a utility purpose, in which the group power proc is pretty nice, it just doesnt look as great as the two robes below it on the list. The ae proc is pretty cool, but not to many name fights have group adds so it would be situational.
I feel the t4 gloves should be on top as well, mostly because if you're guild is getting those then they're also getting the forearms and boots, and the 2 set bonus certainly makes it a good choice. Not really an issue there though.
Im a little suprised to not see
LootDB.com | EverQuest II Item Database - Darkened Jewel of Poisonous Fire (Darkened Jewel of Poisonous Fire, lootdb link is outdated) on the earring list. Its pretty much a carbon copy of the ethernaught earring, only it has 5 more crit but 1 less hit on the proc (although it does proc for a little bit more per hit). The lesser total damage from the proc might not make it as good as the ethernaught but it certainly looks like it belongs somewhere on the list.
The Void touched Symbol of Calling that shhhhh posted is also another ommision I see from the secondary choices. Personally I think its on par with the ethernaught Dagger (I wear it over the dagger since im not in need of all the spell dmg from it), and again at any rate it at least belongs on the list somewhere.
The only other thing that might change with todays hot fix for the greater void bane proc is the ring choices. Depending on how big the fix/nerf is, im thinking the the ring of blood and rage will be the better choice. But this wont matter until we see it.
I think you underrate spell crit bonus a little, but everything else looks great.