I really want to like you for taking a stab at solving this problem because it's a serious one for startups and small businesses, but I can't as long as you keep this approach. Shopping for insurance (even through a broker) is an extra layer of friction to the hiring/onboarding process and this needs to be removed.
In my experience, startups are bottlenecked by hiring more than anything today, and part of that is compensation/benefits. If you make it more difficult or more complex for startups to get people compensated and set up with benefits, they will decide to work somewhere else.