Oh, I don't want to be unclear. I think it's fruitless to guess at a department's overall philosophy, as if many of them even had one! Sure, there are some which have pretty distinct reputations, but you're not going to work with the entire department anyway. What I'm trying to say is that if you're going to talk about a professor, talk about them in the context of your own interests and objectives. It would be a waste of word count to fill up your SoP with a. fawning language; b. summary of their work that you are into; or c. endless description of faculty work. I'm just saying that the SoP is a chance for them to get to know you, not themselves.
When I mention "program structure, service opportunities, resources" etc. I'm talking about the following:
-Program structure -- does the fellowship or program stipulate that students must receive a wide breadth of literary knowledge? Are there comps? Is there a periodization requirement? Do classes on the course offerings list focus more on special topics or on times and genres? Is there a special focus on literature pedagogy (as there is at UMass Amherst, part of why I applied there)? Much of this is evident from the department's admissions page. Though it is not as important as faculty, I think it's pretty important.
-Service opportunities -- what is the teaching situation? Do students serve on ad-coms? Is there are a Graduate Student Organization or union? Does the college hold a conference? Are there interdisciplinarity committees or interdepartmental offerings? Is there an in-house journal at which one can RA? Knowing all the things you are expected to and are able to do at a university besides go to classes is pretty crucial. It'll show you're prepared and able to self-start outside a classroom.
You already covered resources.