I'd love to see them add another data point to the next challenge. We have user ratings & date; when teams actually started utilizing date instead of ignoring it like Cinematch the scores shot up significantly. Imagine if they added something else to the dataset; perhaps movies that have been "viewed" and/or "queued" by users but have not been rated or something more off-the-wall like some basic demographic data or what level of Netflix plan they subscribe to.