While the new Full Wets still seem to leave a lot to be desired, this is more to do with visibility and spray.
During conditions that would call for Full Wets, the spray produced by current cars makes visibility so bad that FIA will always choose to red flag. This means the tire is functionally useless regardless of its actual performance.
I actually agree with Mario Isola here; if this is the case we might as well toss out Wets/Inters and just make one super-inter with a wider window.
I would of course love to have real wet races again, but the massive rooster-tail spray of these ground effect cars makes it a dangerous proposition. FIA is not going to want to take any risks, especially in the wake of a recent fatality due to weather.