I don't think anybody is arguing that Brees doesn't need some talent around him to succeed. The team has always found some standouts and then plugged-in role players.
A foundation of Colston, Cooks, Spiller, Ingram, and Watson looks like a solid starting point at the skill positions and then the consideration becomes whether some of the more unknown/unproven players are ready to step up.
There are certainly question marks but the cupboard isn't bare of talent.