Ah, haiku. I like a lot of the ideas it has, and wish someone would make a hybrid of some of its ideas with an actual unix
That's the thing, it was the most novel OS of the time.
Even the OS we use today are all based on some kind of Unix, except for Windows that trace their legacy to VMS through Windows NT.
BeOS on the other time was written from scratch in the 1990's.
i believe your wish has been granted: https://news.ycombinator.com/item?id=48124834