Made Cook's illustrated's blueberry pie today. The texture was spot on, juicy but not at all runny. I'm hoping that the pronounced lemon flavor mellows a bit in the fridge overnight, it was a bit much. If I make it again I'll just use the juice and not the zest of the lemon.
The tapioca and the apple together made a perfect filling, exactly what I was looking for. Unfortunately the flavor, for me was off a bit. Maybe I'm more used to the Maine style that is a bit more plain where you just taste the blueberries.
https://www.americastestkitchen.com/recipes/4325-blueberry-pie