Should editors and reviewers be listed alongside authors, to give them credit?
Speaking as an associate editor of a journal, I'm quite happy with the credit I receive: I'm listed as part of the editorial board online, it's listed on my C.V., and I get to help make sure what's getting published in my field is up to the standards of quality I desire.

That said, some journals do list the editor and even the reviewers after publication (see, for example, the Frontiers series of journals), so at least some people definitely seem to agree with your sentiment.