I think there is a lot of improvement can be done in the employee referrals portal that are used in companies. I am thinking connecting employees from linkedin and using the connection endorsements suggest best referrals based on job profile.
Only you can answer that. I know it sounds like a vague thing to say, but you should just explore it further before jumping in.
I'd recommend reading ZERO TO ONE by Peter Thiel and THE HARD THING ABOUT HARD THINGS by Ben Horowitz. That will give you a clue if you should pursue your idea and how.
Believe me, just read the books and you'll know the answer when you finish them.
