*sigh*
First of all, this is not a retread of any sort. You claim that this game is a remake of Mario 3? Mario is far more maneuverable in this title than he is in that game. He can wall jump, butt-stomp, and pretty much do anything he could in 3D in a 2D plane. You might immediately claim that therefore this must be a carbon-copy of the DS game. Again, no. There are many new levels, some new power-ups, a 4-player versus option, a 4-player versus component, motion controlled areas and the Super Guide. This is not the same game.
And you're really going to emphasize story and gameplay on the same level of importance? Don't get me wrong, I enjoy narrative in games as well. However, you should remember the medium we're discussing. We're not talking about movies, novels, or plays. We're talking about games. Therefore, the gameplay must always take full position of importance. Following shortly thereafter should be level-design that compliments the gameplay, not the story. In fact, narratives in games are rather unimportant in the whole scheme of things. Yes, they may give you a compelling reason to continue playing. But if the game itself is not enjoyable to play, then what's the fucking point?