I think the issue with the Wyll torture scene might be that it comes to early. In fact I think that structurally we just see too much of Wyll's story unfold in too short a length of time. In terms of story progression, we meet him pretty early in act one, he's presented as a braggy, flamboyant hero, then we learn about his cruel, vengeful streak and willingness to set aside innocents in favor of violent vengeance, his backstory with his father and the flaming fist, the fact he's willing to torture a man, his pact with a devil, all in the first act. I think it would make more sense and feel more clear if that stuff was all spaced out more. Having him torture someone should be a shocking moment saved for after the story has really established him as a good guy, with maybe a few chinks revealed in his armor. Instead we actually start seeing the facade slip really early. I don't think the torture scene has the bite that it should because we don't have a lot of time spent with Wyll the noble hero.