don't see how SE, Yoshi in particular can call a scripted boss fight Hard mode in the first place.
the one thing this game lacks in spades is a real AI with possibilities instead of scripted actions. the repetitive hundred runs through the same dungeons being called Endgame is laughable. games used scripted actions 10 years ago because AI with some semblance of reaction to environment was nearly impossible to add into a game at the time.
the very advances in environmental 3D alone since then is evidence enough that free choices AI could be added to the MOBs making the fights true challenges without the lame increases in HP's and defense/immunity to damage that is being used to strengthen them.