I agree with glorax except the pet for runic 2. I think we could get both it and runic 1 changed into efficient solid damage 8-9 tick dots with a -50 + resist adjust. You may have noticed that necs dont take pets seriously, and the part Mario likes is it's mana free.
If our spells allowed us to do reliable sustained dps a full fight for some reasonable $VALUE, I doubt he would much care about a pet. Though I'm not seriously against it, I just don't think we are psychologically a pet class any more. For example, pet tomes are dps neutral, and I never mentioned it because the pet flipping to cast was kind of cute when pets did that. Charm pets casting LT is a definite dps minus and pretty funny.
If you want to give lowbies something for the AA, and you are still interested in healing, What about making it an group buff which allows
members to proc aoe heals off offensive casts, changing Insidious Infection to become a modifier.
It could be something like instant cast, 2 min duration, 4 minute cooldown with a chance to proc 150 base heal off say 2.2% per 100* mana from offensive casts. Insidious infection could scale it to say a 400 base. Druids and clerics would probably love it because their critical heal mechanic might have some synergy with it? Also, 2 necros in group could keep it up full time, giving group utility, and maybe raid since we don't stack very well.
It must sound strange to find out that the undead guys just want to drive a volvo, but really we just want reliable sustained dps that puts us in 5% of the other casters most fights. And a chance to win on bosses with massive health(tm). Right now our biggest dps upgrade from ikisith spells is scent of the murk and we wouldn't mind having something else good as well.
* This is of course off a bracer that you made that I like and real numbers could vary.
(?) idk about the heal crit thing or how it works here.