It sucks because they are so many compelling guys out there. I watched McNabb do a lot with flat out bad WR's. Todd Pinkston went to another team and became their third WR. James Thrash was trash. and I can't even remember the third guy's name. He had TO for a brief stint and then Westbrook. McNabb probably won't get in, maybe he shouldn't, but he deserves a look.
Then look at Kurt Warner. You can make a pretty solid case for him.
In support of Rivers, I think he has a couple of records that people forget about. IIRC, he set a completion percentage record two years ago? I also think he's going to retire highly ranked in a lot of the categories. IDK. i don't like him at all, but I do respect him.