In a discussion on underrated stories, Revolutionary_Jack had an interesting point in favor of the stories that showed Jean Dewolff when she was alive, as that gave more power to the better-known story in which she was killed off.
So in that vein, what Spider-Man stories improve better-known material? These would be recommendations where the reader presumably gets a solid comic, and their appreciation of something fan-favorite also increases.
For example, much of Superior Spider-Man builds on the Doctor Octopus spotlight in Spider-Man Unlimited #3.