Nintendo lawyers :
Not if they do it the same way as the OOT port. You provide the ROM, their code then picks it apart and puts it back together into an executable. There’s nothing for ninty to sue about.
You forgot one small detail, Nintendo doesn’t need a legal basis to sue. They have more money which allows them to weaponize the legal system against anyone they don’t like. Any small team like this cant even afford lawyers.
Apart from the fact that they haven’t gone after the OOT recompiler.
Minty is the most litigious gaming company around, they don’t sit on their haunches and wait to see what comes next. If there was something to sue over, they would have.
Just like they would have sued the hundreds of Pokémon romhack groups out there if they could.
I hope more reversal engineering teams pop up like this because I like this sort of thing
You fool!
Be a good grandma: Tussle your grandkids’ hair and tell 'em YOU WILL EAT WHEN THE FOOD IS READY!