I've been thinking, and this thought in my head bugs me even though I am pretty sure it won't happen.
BUT, let's say that with this magic island the final trial will be to overcome what it presents to you.
Like, and I know I'm probably going to have trouble properly articulating this thought, what if we have a mix of "meet those who have died" (like Pyrrha) a "Jabberwock problem" and to wrap it up we have a fight. What if this "Jabberwock" has the power to make our characters see things, and the final trial is to fight it. So.....Jaune VS Pyrrha, Ruby VS Summer, Neo VS Torckwick.