This won't be as applicable for everyone but it would really help subscription based businesses. If you could switch between visits and visitors in funnels that'd really help get a lot more clarity around conversion figures. What happens when it's just visit level is if you do a better job of getting people to come back a second time your overall conversion goes down whilst your actual volume of conversions goes up, it's just that people appear twice at the beginning of the funnel and once at the end. It wouldn't necessarily need to be a fallout report in terms of indicating where they left to, but some sort of simple conversion of how many people went through this gateway, before they went through this one at a unique visitor level.
