I'm looking for some options for a Dread Necromancer with both essentia pool and a power point pool to be able to leverage those to make their zombies and skeletons better. Is there anything to do that in 3.5e, Pathfinder, or even the quality homebrew options? Are there any Essentia or Psionics options for unintelligent undead in general? I'm not adverse to homebrew, but the more such a thing can be anchored in existing creatures and flavor and such, and the higher quality it is, the better. What about more advanced undead options than just trying to boost those two basic types?

Thanks!