In the world of funnels, I'd like to see not just how many people did x then y within z days, but also how many times y was done within z days (with total, average and median if possible). E.g. A funnel of first app opens and play game within 7 days, showing the unique % as well as how many times a level was played in the first 7 days.
Not sure if this is doable already. If not I'd love to see it.