Yeah that's what I was thinking. If we did something between the two major arcs, I could see Koenma sending Botan down to secretly observe and evaluate Kuwabara, Hiei and Kurama to consider offering them full Spirit Detective titles, should they be right and accept it. Considering Kurama is the least intimidating or perverse, he could be the one Botan seeks first and does enroll in his school under maybe...like a ruse about low level demons causing a rucks around? It could give us a chance to make her less of a useless character, skills wise?