Yoast SEO 3.1 has a release candidate out, and they are taking a lot of the feedback they got in 3.0 into consideration. The biggest changes are a rollback on the snippet preview (though it’s still more than it was prior to 3.0), as well as a “primary category” option. They really want folks to test it, so if you can, give 3.1 a go — especially if you’re a plugin maker and want to ensure compatibility.