Just a couple of things from testing.
Summons snapshot on summon. So this means you better have all the Magic Att, SPR, Crit, and etc, when summoning your summons.
Gather Corpse from Necromancer has a pretty big AoE splash. This coupled with its lower cd can make it better for most situations to use/get instead of Desmodus from Sorcerer. This can, depending on the person, frees up 10 extra points on Sorcerer for other things such as Summon Familiar or other skills.
The buff from Desmosdus and Gather Corpse increases all damage a summon does. This includes additive damage that can be obtained from Enchant Fire.
Enchant Fires extra line is now a true magic damage line. This means it can crit. Haven’t seen if it can be blocked or dodged as of yet.
This is so far what I have discovered.
@crevox Anything to add?