One small fix that could be super helpful for certain models:

Conversion Rates can't currently be changed over time like a regular metric, which causes us to have to build Customer Acquisition funnels in this strange way shown in the photo below.

Essentially we have to build a new metric for leads or traffic/visits, then build a metric for the conversion rate, have those two numbers multiply together into the default Top of Funnel metric, then have a 100% conversion rate, repeating the name "New Customers".

Ideally, we could just have the conversion rate as a metric that we can change over time. In the meantime, it would be super helpful to at least hide the "Top of Funnel" metric, because right now we have to show "New Customers" twice in the data table when building in this way.