It would be great to create a funnel report that compares the different conversion rates by a given property.
For instance: Funnel report by Original Source with made up numbers:
MQL > SQL
SQL > Opp.
Opp > Customer
Paid Search
50%
20%
10%
Organic Search
60%
30%
15%
Paid Social
45%
15%
5%
Organic Social
60%
20%
2%
etc. etc...
As I can tell, the only way to do this is to set up INDIVIDUAL funnel charts and set the filter of "Original source" = Paid search (and change this per funnel chart).