One thing that I like is the way that it had a world style similar to both Super Mario World and New Super Mario Bros U. Instead of having generic camera locks, it's actually just one big open world, and that's a huge thing that I am really interested in. I do wish that the same mindset was incorporated into a level, but Super Mario: Endless Earth seems to do just that, so I'll be looking forward to that. I also like how nice the developers were and made it easier for hackers to hack NSMBW. Take for example, the world map.
In the original game, you had a 3D engine, and it was confusing as hell to design maps for it. The only world which would take model imports was World 9, and that's because it wasn't as complex as the other worlds. Even then, the only hack which took advantage of that was Newer Summer Sun, but that was just a rotating coin model, and only had one stage.
In Newer Super Mario Bros. Wii, however, they introduced a new 2D engine made entirely from scratch. For some reason, all the 3D modelers on the team quit, and this was their last option, but I'm glad they took this route. Sure, it may not look as good as if it were in 3D, but it can surely help those who want to mod the game.
Though, they have made some things that I do wish didn't happen, like ruining translation support for Newer. Thankfully, there was a dedicated team made to translate the game to other languages, and I was even in the team too. But sadly, the team died when RVLution (the main forum for hacking NSMBW) has died. Hopefully they can make a return on [HorizonWii](https://horizonwii.net), but that's one of those things we can only hope. It would have been nice to play the game in my native Canadian language (French), but I guess I'll be using my secondary language. Oh well.
The new themes, though, are extremely creative. I never saw a Japanese town in a Super Mario game, and neither have I seen a bomber land world. Speaking off bombs and attacks, I do extremely appreciate the fact that the hammer suit has been ported over from Super Mario Bros. 3, but I unfortunately got spoiled with Newer DS's version of the game, which combines it with the shell suit. I do wish that in the Deluxe version that will be released soon, they could port the Newer DS version of the powerup.
Overall, I do think that the game **shines** in creativity, and that's what I adore. I might do a full review soon, but I need to find a way to actually play Newer Wii again, because my PC is currently broken and I don't exactly use my wii that much