Lots Of People said:
Release the original Super Mario instead!
People seem to have their nostalgia googles glued on for the original Super Mario. I remember it fondly too, but even so, it was simplistic, linear, visually ugly, and extremely difficult once you get past the earlier worlds. Super Mario Run has its faults (the most egregious of which is the online requirement), but the original is not automatically better.
First of all, unlike the original, SMR was designed for a touch interface. Controlling Mario is precise, which is typically not the case with the games I've played that have a digital d-pad. The inability to make Mario (or whomever) go backwards (there are ways around this) is sometimes frustrating, but the inability to stop him provides its own challenges. Frankly, playing SMR is not much different than the way most people play MarioKart: Smash the gas button all the way down and leave it there.
For better or for worse, one of the design goals was "bite sized play", where a given level takes 3 minutes or less. Not everyone will like this feature, but I think in general it works well enough for this game. The levels can frequently feel a little short, but as you collect all the colored coins, they actually reconfigure themselves a little. Playing a level when set to collect the black coins is more difficult than playing when set to a different coin type.
I think another issue with the perception of the game is that it has been classified as an "endless runner". It has some elements in common, but really I don't think the game should have ever been classified as such, and I think people do it a disservice when they call it one. The levels are not auto-generated; they all have the typical outstanding Nintendo level design characteristics and flow. Each level has a start and an end; each is a miniature version of what one would find in a console Mario game.
Is the game perfect? No. The always on connection is exceptionally irritating. The levels often feel short, and some parts of the game are very grindy (*cough cough* unlocking Daisy). With respect to family sharing, I believe that as long as one is willing to share in-game progress, the game can be installed on multiple devices/accounts without repurchasing it. This isn't as flexible as what other apps do, but isn't as draconian as some people make it out to be (correct me if I'm wrong here).
Anyway, my two cents...
