Sounds great! Once you've sorted out the issues with the palette, we could replace the old maps we currently have on the wiki. Well, maybe we'd have to add the events first, but at least we could start with the missing maps (Betilla levels, boss battles, etc.).So far I've managed to extract the maps for every level including their collision properties. You can see some examples on my Twitter.
Well, the moon is missing from the NTSC version simply because the screen is shorter compared to the PAL version (224 pixels vs. 256).
That's right! Maybe they thought a tiny bit of moon looked bad?Actually no. If you compare them closely you'll see that the bottom of the moon should still be visible. So for some reason they actually used different background renders between the versions.