MSBT only opens files with strings and text, sleep_LZ and hud_LZ are not msbt files. Use a hex editor.
More info here I think, smarter people are helping live https://discord.gg/0yzz4j93HUQ1l819
just use TNES on a rom and put it in the roms folder of a VC..............
Anyway, what other home menu things could we change? I want to do something, but IDK what