Thanks everyone for the comments on this. It motivates me to keep at it. It's a long road to completion, but i want to get there. And I hope I can keep myself into it enough to do so.
And I've got a confession to make. So far, pretty much all the levels from World 1 are essentially remakes from Mario World hacks that I pretty much stopped working on (And never released, apart from an old demo of my first one), as I didn't want all those levels I made to go to waste, I told myself "Why not bring them to NSMBWii?" The only one that's not completely a remake is 1-6. As that one comes from a level my friend made in Super Mario Flash with a bunch of added stuff. I may get the 1-ups a little on it, but we'll see, as it's still fun to do that part. ^^
By the way antnee for 1-6, for the Rolling hills bug you mentioned, could you go a little more detail on that one? I'm assuming enemies probably get stuck or squished, or probably sent at another part of the level not really possible.
So many levels of this mod will probably feel a lot like older style levels, especially the ones in world 1, as some of them are almost re-made down to the tile (Which is why a lot of them may seem a little cluttered.)
The later ones are more stretched to feel a little more like well... NSMBWii I guess lol. And I'd say those are probably a little more multiplayer friendly. That's pretty much where I got the name as well. The best way I can describe this game right now is well.. "Just Another Adventure", as Mario would probably say... you know... since he's been on..... a lot of them. lol
Anyways, I'll be sure to update more on the game off and on. I defenitely can't put any release date on it, as there's no way to know at the rate I go. But I do want to complete this, and I hope I will get and keep the motivation to do so. Which the comments so far have certainly helped in that area. So thanks everyone and like before if you see any bugs or anything of the sort, let me know. ^^