Thing is we allow adults to approve of everything else, what's this one more thing? It would allow parents like me to let my daughter or son be free and unrestricted at any age she wanted while I could still make sure she is safe. Remember this is something I am arguing to add right now and feel it could be feasible, if still nearly impossible.

I honestly feel it is also, at this point and time, easier to pitch than the test you propose. People aren't ready to accept that their child could just emancipate, while guardian approval still leaves them power. Little do they know it will circumvent the sexual taboo and it would be legal to research children involved sexually consensually.

Also like you aren't a fan of guardian approval I am not a fan of government made tests allowing or disallowing freedoms. However, both to me are better than what we have now.