"Luffy, Zoro, and Nami. For now, all the triggers are gathered. That's what I think — that's what this drawing is for me."
^ Oda's author comment from Color Walk 1, which Usopp and Sanji were also featured in, but Oda didn't say anything about them like this.
Has there ever been a counter to this?
^ Oda's author comment from Color Walk 1, which Usopp and Sanji were also featured in, but Oda didn't say anything about them like this.
Has there ever been a counter to this?

Yes this color spread came out prior to syrup village.