Attached is the AA spec and Ogre Bot configuration file for my bot group primary DPS slot: a 100 Wizard with Epic 2.0 and Ascension level 9 Thaumaturge. You will note that "Absorb Magic" is near the top of the call stack with a custom tag of "manafeed" and is disabled. I use an OgreMCP button with "ChangeCastStackListBoxItemByTag" command [ parameters: All, manafeed, Toggle, FALSE< FALSE ] to relay to my crew that the fight requires mana draining the mob (like with Shrouded Temple boss). Feel free to do the same, or to manually control if you like.
UPODATE : 5/19 - added HQ ear support (thanks Kannkor), adjusted call stack for better DPS, disabled Thaum. ascension abilities so you can enable if you run that ascension class, or you can add in your preferred ascension abilities.
Enjoy - AoW