You know the drill: timers, buffbars. Does remembering to reclick a button constitute gameplay?
I mean ... there's a game happening around us, but instead we're watching icons disappear. Surely the UI should be a tool rather than the gameplay itself (unless you want to do a puzzle minigame, which I've seen done effectively in, say, Alien Swarm:Reactive Drop).
So my question is, what is the thrill you getting out of rebuffing?