You could frame this as an extension of number 3, but an additional thing that foundations can do, but s-processes with rotating casts of recommenders can't do, is active grant-making.
Foundations can decide that theres's a specific project that they want to to exist, and then go out in the world and try to find the people who can do it, and offer to fund those people to do that project. That's not something you can do, if you're hired to be a recommender for 3 months and then go back to your other job, and you can't make commitments on behalf of the grant-making org.
Yes, I came here to say this. I have been doing active grantmaking for reprogenetics, but it's quite difficult without anyone having said "I want to fund topic/project/goal X for up to $Y [/if there's a good case for it or something]". Each active grant takes at least days, more like weeks or months of work (depending how you count; there's lots of background to catch up on, searches to run, networking to do, etc.). That investment is much easier to be wasted without some sort of reasonably solid budget / feedback / conditions under which funding can be secured.
Cf. the creation of molecular biology by the Rockefeller Foundation. Still learning about it, but it sounds like they kinda just decided to create a new field and then did it (with a ton of money and a ton of active grantmaking and recruiting and institution-building).
I wrote this to help think through considerations. Now I decided to publish it. habryka left some comments on the google doc, some of which I copied here.
One way to do philanthropy:
Another way to do philanthropy:
I don't know which is better. I want to think through considerations. Here's some potential advantages of foundation style (some of which could be attained by sophisticated versions of s-process style — you can kinda read this as hard goals for s-process style philanthropy to achieve):[1]
One other thing: habryka suggests that the s-process is supposed to help avoid grifters and confidence games. I don't get it? In the s-process the recommenders will optimize for (a) saying stuff that the funders want to hear and (b) recommending stuff that the funders will feel happy to fund, just like in the CG setup except probably more because the funders are more hands-on and it's very salient to the recommenders that they're competing with each other to look good to the funders. Update: habryka says (excerpt):
I'm thinking about this because habryka is creating a new s-process system, not because of my experience with SFF (but I also hope to write about soon). SFF's problems are mostly due to bad execution, not fundamental problems with s-process philanthropy. I'm tentatively excited about habryka's new s-process.