Add game theory to your idea and you'll find your differentiation on both sides of the introductions. Recruitment is still so stuffy and HR sanatorium like. If you're going to do something new in a well entrenched industry, shake things up, disrupt. Make it fun, rewarding, and exclusively your brand to be recruited by your solution as well as to recruit with your system.
Second, don't look for consensus; if you have passion and clear assumptions, beat down your assumptions with MPV's until you achieve a success (failure is a success, too). Consensus results in faster horses.
The role of recruitment is "broker"; are you looking to be profitable by volume or quality? If by volume, it is a huge slog; if by value, it is fuelled by passion because it is harder but more rewarding. Revolutionize by looking at other industries that act like a broker in a new digital way.
Take UBER for example, I "think" it would be neat to be able to see in a geo visual what skillsets are in a boundary, tenure, and availability. I think it would also be interesting to have all the data on recruits and startups already precollected from social media and placed in a talent dashboard with links to recommendations and such... if you think about how Amazon now personally asks purchasers if they could answer a question about a product that was posed by a potential purchaser, you could the same in both directions. Startups can't afford poor hires, and good talent cannot afford bad startups. Maybe a niche would be to aggregate the details of people, then teams, then reach out to recruits with "I think you'd be a good fit for this team, and here is why (in a autogenerated visual", as well you could do the same for the startup in giving them a tool to share (input or API) their team dashboard and let them see how they would look to a recruit, and what recruits will fill gaps (auto-identified or specifically startup-defined). In the end, you'll have a very good lens in which startups and recruits can honestly see what their getting into.
TLDR; That actually could really hit a nail on the head; give startups a way to orchestrate growth through the migration from tools to people, and to organize the traits of their teams to find the most suitable recruits. Lots of talent and client acquisition paths. Be an expert on teams (small teams for explosive growth like AWS, maybe?). The match them with your proprietary 147 point algorithm.
Good luck!