Yeah the Diamond Kingdom will have more focus, especially with Morris, im sure of it, only question is when. For now Licht and the WNDE stuff is pretty major, and they are presented as the main "villains" of the story. So it will take time to shift the focus on the Diamond Kingdom.
But now that Julius died, the other kingdoms will target Clover kingdom for sure, especially the Diamond kingdom which waged war with Clover several times. So i think a war arc will happen pretty soon and thats where we will get more focus on Morris, the new Diamond generals, the king of diamond and Mars's and Ladros's mission to rescue the Diamond Kingdom from its path of terror and destruction.