So much this. What should we give a flying fornication about a "universe' if the franchises that make up that universe aren't well utilized? Books like Justice League (and Avengers) should be the exception, not the rule. Flash, GL, WW, and all the rest need to shine so that when we see them come together, it's truly awesome. A universe and over-arching continuity works great and seeing Easter Eggs and occasional crossovers helps us to appreciate the whole when the pieces making up that whole are quality.