However, I would say something along the lines of "Brian Jacques no longer inhabits the Real World, but his spirit lives on and he will never abandon the Abbey he put so much of his life into." Acknowledging his death with respect, but pointing out that he wouldn't abandon the world he made. So he's always been with the OFU in spirit, looking after the people trying to protect Redwall.

Or something similar. I waffle about this stuff, and I dunno if it'll be any help at all.

Would it be alright to at least include a tribute to Jacques because he's the writer of Redwall? I really don't know how these OFUs work, though, so correct me if I'm getting something wrong or suggesting something that is best not to do.

That's how I thought it worked out, was I wrong in assuming that everyone jumped to the same conclusion I did due to my love of meta?

Just like the OFUs themselves are tributes of a sort to the preservation of the author's works and the canon that they have created, so too, I think, would the headmaster/mistress of an OFU be a tribute to that author.