If I was a consultant probably my answer would change - I hate the job search, and if you could keep the work coming in it might be worth it. But, you would have to have better resources and charge less than just signing up with a consulting shop would provide.
Realistically, for you to be my "agent" you really need to take the time to get to know me. I've had a few recruiters do that, but they pretty much worked for the financial HFT companies that have obscene amounts of cash to throw at hiring (where 250K is a modest baseline salary). I have trouble thinking that you can afford the amount of time and work that it would take for you to represent me better than I can represent myself. I'm in the valley, I have friends, I can go to meetups if I want to network in a tech area, I can read reviews on glassdoor, and I can let my cell phone go to voice mail. That seems to cover most of what you offer, for free. The rest I can get from other recruiters, for free.