Balanced expanded undead rules?

Fellow mordheimers,

For a while now I have been looking for any expanded rules for the undead warband. The major one is ofcourse the restless dead warband, which seems to me to be the most balanced. I have read some experimental concepts for the blooddragons. But does anyone know of any expanded rules that have been tested and balanced out. My main concerns with the original undead warband is the lack of the skeleton warriors and the weakness of the dregs. I am looking for a more close combat orientated warband. Any thoughts or links (i.e. blooddragons)?

I have found a necrarch warband in the letters of the damned: https://docs.google.com/file/d/0B18J5DU-6cP_Ty1sYlA4UHVzWkU/edit?pli=1

Regards,

Rory

We've played both Restless Dead and Necrarchs in our group. No problems with either.