It appears that there is now more of focus on subscriptions with tiered private content rather than the "funded backlog" mechanic highlighted in the announcement blog post, which I think is a good choice.
I think that you can now act as a merchant of record is overall the biggest deal for me. The shaky legal situation of Github Sponsors once you offer rewards was always the show-stopper for not signing up with Github Sponsors for me. In case I pick up some significant open-source work again, I'll likely sign up with you! :)
P.S.: You have to do double-newlines if you want your list to render correctly.