GitHub has their Funding.yml file, composer and npm can tell you about projects seeking funding - why not be able to surface that data on Drupal.org? This is the idea behind the Funding module. We are proposing to use OpenCollective, Patreon, PayPal, and other fundraising sites to put buttons on D.o project pages. In a perfect world, there would be a way to add this info to the Project Browser. This all depends on D.o getting off of Drupal 7, but we can dream...