I think the use of Humble was definitely about the episodic nature of the product, but I'm not sure it worked very well. Humble buyers were presumably a bit less excited for the games than others, and I seriously doubt it was enough extra headcount to overcome the fact that Telltale basically sold games to shrinking funnels.

Everyone I know who enjoyed the first GoT Telltale game had quit by the third, but apparently there were six in total? That hardly looks like a sustainable technique.