I hear your points. The feedback on Searchlight is kept private to the candidate, and only shared with employers the candidate has chosen.
Nothing is truly private in this day and age.
Quick counter-example, I get my friend at company X to offer me a job that is very similar to another job I actually want to see what the "private feedback" is so I can cherry pick which ones I should use.
As a consumer of your service, I’d be a little worried about the client only showing me the good stuff. But I guess if the questions are complex enough it would be hard to filter for only good stuff.