I've been catching up on my AoS lore, of which I am woefully behind compared to my knowledge when it comes to the VC/Undead in general in the Old World.
It's been interesting to see Nagash bringing back the original vampire masters...although for the life of me I still can't understand why he would bring back Mannfred instead of Vlad/Vashanesh. The ultimate bitch boy who brought around the death of the Old World and the least trustworthy by a long shot!
Ushoran has popped up since I was last deep in AoS lore, I really like his return, his delusions along with the Flesheater Courts, big thumbs up from me on that.
Surprisingly whilst research for my Bloodline articles I found there were even references to Abhorash! I'd love to know how he managed to pop back up but there doesn't look to be any lore on that
I like to think that maybe him and his bestie Leon (who were fighting together in the end times) mounted Leon's Griffin as the world collapsed, riding into the sky, becoming the ultimate power couple, and using the power of man-love to rematerialise in the AoS realms. 
So the big question there for me is why W'soran has been done the dirty? Vashanesh has of course but GW always wants Mannfred to be their Carstein poster boy, but the Necrarchs were a loved Bloodline with lots of cool lore. They were really different from other vampires (shameless plug to my Necrarch article), and I think would have fit in well being crazy experimenters in AoS. What do we reckon, GW just didn't they fit, or maybe planning on adding them in the future?
It's been interesting to see Nagash bringing back the original vampire masters...although for the life of me I still can't understand why he would bring back Mannfred instead of Vlad/Vashanesh. The ultimate bitch boy who brought around the death of the Old World and the least trustworthy by a long shot!
Ushoran has popped up since I was last deep in AoS lore, I really like his return, his delusions along with the Flesheater Courts, big thumbs up from me on that.
Surprisingly whilst research for my Bloodline articles I found there were even references to Abhorash! I'd love to know how he managed to pop back up but there doesn't look to be any lore on that
So the big question there for me is why W'soran has been done the dirty? Vashanesh has of course but GW always wants Mannfred to be their Carstein poster boy, but the Necrarchs were a loved Bloodline with lots of cool lore. They were really different from other vampires (shameless plug to my Necrarch article), and I think would have fit in well being crazy experimenters in AoS. What do we reckon, GW just didn't they fit, or maybe planning on adding them in the future?