I've been reading casually in Swenson & St. John's American Hybrid. I'll have to read a lot more carefully before I try to say anything definitive, but my first impression is that there is a great deal of poetry here, but not so many poems. Another way of looking at this might be that many of the poets collected here are interested in texture at the expense of structure. For the moment, this is just a conjecture that needs to be fleshed out . . .