Yeah, some screenshots might help clear things up
Here is a sprite of a snake with the tileset as it is in the ROM. The tileset is interleaved so it works in-game, but it makes the tileset view difficult to look at.
When I 8x16 deinterleave, the tileset view becomes legible, but the metasprite view is broken as a result.
It'd be nice to have an option where the metasprite and tileset views match each other when making 8x16 metasprites so it isn't necessary to keep toggling back and forth.