If JW4 didnt end the way it did I might be more open to a fifth installment. I just dont like seeing perfect endings being reverse engineered. Sometimes I like my stories to just...end you know? JW 1-4 tell a great story, I just worry of it being diluted with more and more installments as Hollywood is wanton to do. But if Chad and Keanu have a story I will give them the benefit.
In any event, I suspect the fifth one wont be for some time anyway and we're gonna get a good deal of breathing space until it happens, that way they create some hunger for it.