So you're turning the plot around
As you know, I am definitely one of your biggest fans and claim that this series is the best thing that happened to NG since Blue Clock. But from what I can tell, you're aiming to change this from a tragedy to a happy ending. In the first series you say, "This is the tragic story of what happends to the Mario Brothers", so what once was a tragedy, you are going to make it into a happy ending.
I had alot of unresolved thoughts when watching this- Is Luigi still alive? Are you planning to make another epic castle scene with a bunch of toadstools attacking the castle? Why would you waste minutes of our time making a life mushroom that does no work?
Through you chose Radiohead's Pyramid Song (you and I both love Radiohead) and parts of the Lord of the Rings soundtrack, you didn't really create as intense music or any intense scenes like that could be seen in Mario Brothers 1 and 2. I feel like I could give suggestions to how you can make great scenes, if only you would answer your email. Why don't you respond? Is your email broke?
Anyways, not as good as the other 2 but I got a feeling this is all just exposition for the finale.
Please make the last one as good as the FIRST one. Although your Mario Brother Part II got better score because NG users are such whores to action, your first one had probably the best music visual choreography and sometimes the most powerful scenes don't involve legions of things geting killed a frame. Also, for the last one, consider building up the suspense by showing what Bowswer is doing to the Princess (perhaps as the brothers are running it cuts to a scene showing Bowswer tie her up to torture her).
Anyways, please take these things into consideration