You'll want at least 2 recharge, preferably 3 so you can stack it for a while (assuming you have hasten). After than, 1 accuracy, and then either hold or damage if you have the slots. (Personally I just have recharge).
I've gone for 3 rech, 1 acc, 2 hold. But since getting fluffy my higher level pets dont die often enough to make it worthwhile, am thinking of dropping it to 3 rech and 1 acc. When you first get it its probably your best pet, then the second upgrade comes and its about 3rd. As you're not getting fluffy it will stay there so possibly worth the extra slots in your case
"Well, they found my diary today.
They were appropriately appalled
at the discovery of the eight victims
They're now putting it all together.
Women wrapped in silk
with one leg missing
Eight legs, one body, silk,
spider, brilliant!"
My level 20 Necro/Poison MM is rapidly becoming unplayable, not because of the sets, but because it's one of my first Villains and it's a toon that sort of 'happened'. I'm going to freespec it right.
My real question is about Soul Extraction. Is it worth slotting? If so to what degree and with what? I do seem to lose zombies at a respectable rate so I think the power will get a fair dgree of use, but how good is that hold on them? Do they have any powers they seem to prefer over others?
Any other advice for the respec is also appreciated, though I would like to point out much to some howls of derision that I don't plan to take Stamina, at least not yet, reason being there's just too much useful stuff for teaming, and as this is a concept toon he's almost always in a team.