I'd heard the same "nasty" things about the AfRock, some bloods and especially the Water Pythons (thrashing, biting flailing musk and p00 all over) and have yet to see that - of course the fact that we've had them from younglings and the amount of interaction they get may be key. can't speak to the scrubs (who are supposed to be the kings of eerily-predisposed face-biting). There was a video of a keeper trying to get their WLP out of the cage and it looked like a handful.
I have some good friend who had a pair of gold-phase WLPs a while back...both were fairly docile, but they acquired RIs that they couldn't shake and it eventually killed both of them. They're hard to care for....moreso than Scrubs (except for the size factor) or Bloods IMO. My friends now have a male black-phase WLP who is about 5-6 feet long and is EVIL....it takes 2 hooks and lots of dodging to even get him out of the cage....he is not a snake I would want to get bit by, especially in the face. Ouch.

Now, they also have a couple of Moluccan Scrubs (Morelia clastolepis) and they are not bad once out of the cage but they are very wary and I'm uncomfortable handling them....they have huge heads and very big teeth.....one of the only snakes that really un-nerves me. Very pretty, but not something I would want.

and as a Macklottes keeper/fan you'll get a kick out of this.
I think you're confusing me w/ The Godfather. I've never kept Macklottes and I'll probably keep it that way, lol.