Okay, I just played the shit out of this last night and am floored by how good it is. It still does have that slight input lag delay that PC versions of SMB have, which is even more noticeable after playing and beating SMB on the OG hardware this past year, but once you get used to that slight delay it isn't too bad, not perfect but still very playable and very fun. I dig the graphic upgrade and how it's a upgrade of the look of the original graphics but not so dramatic to be jarring. I honestly think it did a better job enhancing the look of the original graphics then Super Mario Maker did. The remixed songs and geographic themes of the levels were a nice welcome surprise that retained the same level layouts but gave each world a distinct theme like later Mario entries.

So basically, this is my mofo jam right now. Thanks OP for the heads up on this <3