Look, whatever idea you had for this, it's not working. The fights end nearly instantly even from a the weakest forces, and I don't even bother joining in when it's a considerable force or two forces at once. If this event is dependent on players doing the resistance ops to strengthen the Bastion forces to the point where success is more likely, then why in the blazes did you make it so that we can only do them once every hour?
I'm not going to make cheap suggestions. Just work on it, okay?