But creativity doesn’t mean quality. For example, one can argue the prequels were original, but they were not good movies by any stretch of the imagination, partly because of the insane stuff they came up with in the name of “creativity”.
And either way, the Knights of Ren would make much better villains than Leia, Luke, Jar Jar, or any other former hero. “Turns out this good character is now evil” isn’t a very satisfying plot twist.