Summer TV used to be a rerun wasteland, with maybe a game show or two thrown in to make it clear you hadn’t slipped into a time portal and traveled back to February. But those days of vacationing networks are long gone: This season has more shows, and more new shows, than ever. Cop shows, decor shows, fantasy series! — oh, if only all of it were good. Here, we break down this summer’s most and least promising new and returning shows, genre by genre.