I can accept that as a postulate, and Banhammer certainly shows many personality traits that would indicate that he belongs to the latter category.
Hmm. I cannot say I agree with that. Occam's Razor is not an absolute but is meant to be a guideline; at its strongest, it warns us against chasing after unnecessarily complex possibilities when there is no evidence available for them. That being said, for the moment all we have to indicate that Wanda may not be from Faq is speculation and lack of evidence to the contrary, so I do agree that this particular notion should remain a mere hypothesis for now.Of those three, I find both variations of the last one to be unnecessarily complex. Thus Occam's Razor compels us to discard them.
I am personally open to both of these with no reservations at all. *nods*Similarly, the idea that Banhammer simply chose not to control Wanda's specialty seems arbitrary and out of place for one who (presumably) took such pains to create a bubble kingdom.
That leaves the options of caster specialization being as uncontrollable as personality, or Wanda having been popped as something other than a croakamancer.
Edited: For clarity.