Louie makes some use of Gyro's ambitions later, but Louie doesn't play up on Gyro's resentment. Basically, we have a loose thread, begging to be pulled.
Gyro ends the episode with the suggestions of Gizmoduck suit, which has the same ring of foreshadowing as the first episode, that ends with a hint about Della Duck. It certainly doesn't seem like a throw-away joke. We know Gyro is the one to actually make the Gizmoduck suit.
When you put the two together the only logical conclusion is that Gyro will create the Gizmoduck suit and become an evil robot the next time we see him.