Create the ability for triggers to fire at multiple durations, ex. 25%, 50%, 75% and 100% watched, AS the video is watched, not just when the window is closed.
Additionally the current operators less than or equal to, greater than or equal to do not allow you to create "bands" of percentage viewed. For example, if you wanted to tag everyone who watched between 0-25% as well as 26%-50% it is not possible with the current operators.
The current limitations are far too restrictive to create necessary automations.