This system is focused on the source of the hit and the page views that led to the conversion. It could be used to measure organic search ROI for individual content pages. You could justify content spend based on performance data and plan future content based on past returns. I find this use case particularly interesting.

It is capable of multi-session attribution. From a product perspective, the tradeoff is timeframe for efficiency. The longer the historical perspective, the more costly feature becomes. This represents a current personal debate about tradeoffs.