My sons and I were really blown away by the last two episodes. The richness of the animation and the action sequences were fantastic. For my 16yo to repeatedly say 'That is siiiick', when he's normally not impressed with anything, I thought was a great testament to just how well done this final arc is. It only makes me wonder why they waited until the end to roll out this animation, unless it just wasn't available to them before now, or they didn't have the budget they have now to spend on it... Either way, what a fantastic way to end the series.