Pretty to the point...do you think Chibiusa/Rini overstayed her welcome? Should she have been a 1 season (2 season tops) character? Guest star here and there?
With the series already heavily focused on Sailor Moon, bringing her offspring in to "train" with the team after the Black Moon arc was just to much for me. It just took away further screentime/page time from the Inners. IF she had to come back to train, I would've preferred that she had done it in Super and then be done with it or skip Super and come back in SuperS so we could at least have some time off from the character.