I'm curious to hear other's thoughts on they think would be useful.
Please don't hold back ideas! There's very little harm positing silly or unlikely ideas, but there is some potential value (perhaps more than you realize).
Inspired in part by calebo's comment here
My current guess is that there's not actually that much room for high-impact startups. It's really, really hard to successfully create a C-corp, let alone optimizing for strategy at the same time. Now that there is significant money available for nonprofit ventures, it seems much less of a draw than it used to.
There are almost no ideas I have for what very useful startups would look like, at least things that I wouldn't expect could be more effective as nonprofits (at least for the first few years).
Happy to be proven wrong of course! Also happy to provide feedback on specific ideas if people are interested.