This is neat looking, but I'm not sure how actionable it is. Of course there is going to be a drop-off of users as they drill down. That happens in almost every funnel situation. Also, this doesn't seem to account for other factors that may be to blame. What happens if you stop your marketing? What if you pushed a new version the night before?

What is most illuminating for a chart like this is seeing these numbers as a total % of activations/daily users/daily visitors over time. That way, you can see if a particular change you made (such as doing some landing page optimization) actually increased conversions which is ultimately what you're trying to look at in something like this.