"this would be akin to have a having a license to vote) would that remedy the situation a little? The idea would be that informed people would vote for informed people. Could you imagine this being a net benefit or not?"

The idea has been around for a bit and I call it interesting, but also with huge potential of misuse.

Change the test slightly, so your target audience will yield better results, giving you a better result.

Either way, as long as climate change and darwinism are controversial topics, I see it hard to implement in a meaningful way.