People really thought Kid and Law would keep getting stronger until EoS?
As i thought, beating Big Mom (barely) and getting 3 Billion bounty like Luffy is the biggest W they would get
Among the good guys who are linked to the main protagonist, only Zoro, Sanji and Sabo have actual room to quickly grow in strength and reach top tier potential.
Kid and Law are at their peak, Oda hasn't hinted new power ups for them, they awakened their Devil Fruits, used it's full potentials, no haki awakening hints, even the slightiest.. Their crews aren't strong, thats it.
I bet they will come back at the final war as the Wings of the Wings of the Pirate King tho.