[coldtea]

You keep the curators to 5-6 experts in each field, with a reputation for being straight.

If they do any tempering, expel them.

This requires a rich person to pay them, or a community to motivate them, which gives the super-power to an agreeable, but fair BDFL.

[hopler]

This already exists. The problem is how to find it, since on the surface it looks the same as all the junk lists

[coldtea]

Well, people trying it, getting good results, and thus creating word of mouth for it, should be enough.