It's leaves, yeah, though scaled down from a 24x24 NSMBW tile.

No, it's all new levels, just using some of the assets from Newer Wii.

Indeed.

First decompress all the overlays within the rom, open it in a hex editor like Hex Workshop, press Ctrl+F, paste the code from the left, press find. It should find one instance of it in the rom, change it to what's on the right and save.

Yeah. Weird and a half.
Also, certain backgrounds load sound sets for bosses and the like.

No, they are used.

The Castle and Tower bottom backgrounds, if set to the first area of a level, will load the SWARs for the boss battle/boss battle victory music.

There you go:

Decompress all overlays, then seach for left in the ROM and change into what's on the right.

5C029F150010A0130010C015 -> 5C029F150110A0130010C015
80019F150010A0130010C015 -> 80019F150110A0130010C015

bolded is the difference.

*sigh* Not this again...

Decompress all overlays in NSMBe 354 first. Get a proper hex editor, like HexWorkshop or something, open the entire ROM in it, press ctrl+f, paste left side, press enter.

EDIT: Just looked, it seems this is in Overlay9_9. So, you can just decompress that one.

Under ROM File Browser, go to overlay9/overlay9_9, and there is a "Decompress overlay" button there.

It doesn't work in the latest NSMBe, so get 354.

Oh, you'd want L+R+A play as Mario?
That's doable too, hold on.


EDIT:
4C229FE50130A0E3 -> 4C229FE50030A0E3
70219FE50130A0E3 -> 70219FE50030A0E3

I don't think you can prevent it from doing that there. Only way to solve that would be autoscroll, I think.

Also, I came up with a possible solution: put two sets of 198/199 top limit and bottom limit on the same line there, and allow disable on the top limit.

Is the maximum SWAR size for a song known? It seems that if it's too big, the sound effects start to go away.

I dumbed down everything to crappy 16000hz 8 bit samples made the file around 120KB and it seems to work, but I'm not entirely sure.

Uh, that's not a list of all ASM hacks by any stretch of the imagination.

You'd need to give me a patch to make the ROM into the one you've edited first to do that.

Or, if you want to patch a new rom, I'd need to know which one it is.

nmp will not carry over all the files, so I'd recommend an xdelta.

Hey, that's cool. Hopefully the world progression tilemap's easily editable, too.

Hahah, I never noticed that. It probably CAN be fixed, if you knew where the path data settings were.

Well, it'd be possible without any sort of editor, you can just map the stage out yourself, this just makes it a bit easier.

You can edit, you can't actually save, though.