Lol, oh trust me, I do. But, when readers like a certain character, even if I hadn't planned on using them again, I tend to bring them back. I have Zos Kias specifically written with some holes in things where I'll decide closer to reaching that time who goes there. For instance, the next storyline that's coming in, involves Kazehiko, Lily, and introduces kaji, but Kazehiko and Lily couldn't go alone, so I had planned for them to have a chaperone, and who that chaperone was decided only a couple months back, based on a certain character's huge popularity. I intended to bring said character back anyways, though just not quite at that time. I figure it works though, cause now it makes it easier to use said character in the arcs I intended said character to appear in XD