Throughout this thread you have assumed that the dream of unlife makes Thrall creation possible. You've also assumed that it's the only thing that can do this. If you accept that instead, raising the dead is a power granted to the Fallen Lords in general by Balor, then much of your argument falls on stony ground. You're in effect accusing Forrest of an offense that you're practicing to present your counter argument. Seems a bit silly to me.
Also, you're relying a bit too heavily on the Children of Bahl'al thing. It doesn't mean he's the only one who can raise thrall, it sounds more like he was just the first to do so. This may imply that his finding of the dream of unlife allowed him to do so but it certainly doesn't mean he alone could after that. Soulblighter can as he is able to pass on the secret behind the process to the Baron and other corrupt nobles in preparation of his return.
Also, your speculation that Bahl'al is a separate entity still roaming the lands is just that, speculation. No better or worse than Forrest's, and I'll get round to adding it to the appropriate section one of these days.