The problem with most of these ideas is that they seem to require plenty of competent management, and until you can find the people to run them, they're going to be hard to pull off.
If we're going to be spending far more money in the next few years, we're going to need to significantly increase the number of capable EA entrepreneurs.
One way to spend a lot of money that would also help to develop more EA entrepreneurs would be to set up a fund to provide seed funding to new EA projects (plus connections, prestige etc.). A couple of hundred thousand dollars allocated with the promise of more to come, and with clear criteria for awards, sends a clear message: (i) there's money in this for competent entrepreneurs (ii) you can safely build your career here and commit to it for the long-term. This would help to attract talent to the community, which will allow us to spend much more in the coming years.
I suspect that funders in general, but especially altruists, and double-especially effective altruists, should be investing in prizes more on the margin. Briefly, some arguments in favor:
There are a number of ways in which an economically sound EA prize would differ from usual philanthropic prizes (which are typically engineered with the PR impact in mind, rather than as a sustainable funding source). I hope to write a post about this eventually (both w.r.t. the economic arguments, and particularly promising opportunities at the moment). But I'm always interested in thoughts.
I'd be very interested in seeing a post from you on this. I don't think it is obvious that:
as it might be that the ideal investment in them at this stage is still zero, even if that would change later. The counterfactuals with prizes are actually quite hard to evaluate -- you could easily have no effect if the work was going to be done anyway (I think this bites harder here than in more typical granting). I'd love to see a well considered article on prizes, taking concerns like this into account.
I've been thinking along similar lines. I at least think this ought to be investigated further.