Nice idea, sort of like the inverse of Product Hunt.

1) it seems aggressively walled off by login/singup, e.g. one must signup or login just to view the details of a problem.

2) there is a variation of this in the corporate world where “innovation” consultants try to pitch corporate clients on the idea of featuring business problems to a panel of startups. There are a few problems I’ve seen with this model but the most applicable is, people most passionate about a problem set aren’t always the decision makers to procure or fund the solution.

3) have you thought about how to make this a functioning market? It seems like you need to attract builder to work on these problems and subject matter experts to document the problems more deeply than the top level titles.

For 1), use reader mode.