Rick Jones was originally the Kid Sidekick of the Avengers. He was a non-powered human, basically Jimmy Olsen/Snapper Carr, and he played a bigger part in the original Kree-Skrull war than Spider-Man ever has in any Avengers story.
https://www.youtube.com/watch?v=38ui0vpAaAo&t=1246s
Spider-Man should feel as useful and special in the Avengers than say...Hawkeye but he isn't even that.