Sorry if this is threadnomancy, but I wanted to ask a few things.
Firstly, why no periapt? Because this list lives and dies by the magic phase it seems that you'd want every little boost you could get. I appreciate that it's hard to fit with the SGK. You'd have to find 5 points in the lord section, which might be difficult/impossible. Oh, and trade out one of the baby vampire's defensive kit for seed of rebirth and dispel scroll (freeing up 25 on the SGK, meaning you have 50 free in lords).
Secondly, I'm not sure how well this will work against anyone that doesn't run at you. Woodelves, lizards, dwarfs, empire and skaven all leap to mind, but DE, HE and ogres can be proper blasty too. I'm mainly talking about your mortis engines and lack of fast stuff.
I guess your response is to 6 dice sun and/or pit and hope for failed I tests? This may not be the style in your meta, but it certainly can be in mine.
Thirdly, props on taking skeletons. I feel like more ghouls would be better, but I can't spot points for 'em. Also, make people feel good while you take off their toys.
New for next years ETC comp pack: Units with the "unstable" special rule are limited to 10-25 models.
P.S. Why is no one freaking out about s9 mortis engines? Impact hits, then 2d6+4. Yikes dude.