Honestly I think Wyll comes off really well in his scene with the children. To me he's genuinely trying to help them. Sure he enjoys showing off for them, but I think he just genuinely likes kids. He's trying to be encouraging and playful so they don't realize just how bad of a situation they're in. And he seems genuinely sad about their situation. I think that that scene is actually when we see Wyll at his most genuinely good and decent.
I agree.
I think the scene is undermined for repeat players by the fact we know that Wyll is actually rubbish with a blade, so it’s a bit rich for him to be schooling anyone else, but that’s the fault of his build not the characterisation.