irdeggman points out in post #7 that according to BRCS rules even objects can (rarely) absorb a portion of the divine essence of a violently slain Scion.

Which is what I was reffering to.

So according to 2E rules a scion retains their bloodline if ressurected. Which means that Divine essense or spark doesn't die with the scion.

According to BRCS objects can gain bloodlines.

So it stands to reason that a Scion that dies with their bloodline intact could be raised as an intelligent undead with access to their bloodline abilities. An arguent could be made in this case for a corruption of that blood since the body would be animated by forces from the shadow world. The people would certainly assume the scion to be corrupted, but as GM's we know not everything in the SW is corrupt, so this should be left up to individual GM's for story advancement.

It also stands to reason that an intelligent undead could gain a bloodline if they tried to, and could be the target of an investiture.

Therefore, IMO, the lack of (non awnshegh) undead Regents is more Role Playing limitation than a rules barrier. They would be considered an abomination and destroyed by the good people of Cerilia.

For unintelligent undead, I'd say that without the intelligence to use their blood abilities and since their blood cannot be spillt they may still contain some divine spark in the body, but it is not reachable except maybe with tighmaevril (sp?) weapons.

That, or perhaps the mechanics need to be reconsidered for 4E. Personally I think there are enough RP obstacles that having a bunch of undead regents running around would never happen.