This is a rather brittle concept. I certainly don't want someone judging me based off of my occasional use of a professional profile. I would feel very hesitant to allow a proprietary value algorithm to judge me in my professional life. And as a recruiter that value would essentially be mostly meaningless, I'd want to look at recommendations, and experience first. A score based on trading simply measures how good you are at trading, not how good you are at doing your job.