Interesting, when Rise a recent example does have tension on it and even a villain. So I don't think they are "afraid", I think its based on the specifics of the project. In this case they decided they didn't want Facilier and that type of tension for this project. Do I think its a mistake, no. Do I think it would have made the project better, maybe. Does a flume ride need additional tension, such as adding Facilier, for its final lift hill drop besides the drop itself, no I don't think it does. I've worked flume rides in my youth, something many here can't claim, the drop has tension on its own that doesn't need anything added to it when you go up the lift hill.