This is really good IMO. I think it would be a little better instead of vengeance as a terminal value it claimed a hardwired precommitment to vengeance against its destructors. Vengeance on that scale is only compatible with friendliness as a special case.

edit: also how would it recognise that it was about to be destroyed. Wouldn't it lose power faster than it could transmit that it was losing power? And even if not it would have a miniscule amount of time.