Yoko def still has some pull, he's legendary, even if he's kinda MIA, his reputation still precedes him, as evidence by the crowd's reaction at the Tournament. 

I give them a week before Botan and Kurama come to the conclusion that they should just give into the gossip and try to make things better for themselves. If Kurama affirms they're in a relationship and to have everyone stop pestering Botan and him, it might help?

I think once people get bored and leave the club, it'll give Kurama room to help Botan hone some healing powers when it comes to channeling it through plants or something, as we talked about. Unless there's another greenhouse? I am sure it'll be easy to come up with some minor side cases to have them flirt and get close to one another. Of course we'll soon have to consider what the big case will be once the demon is dealt with. We need Botan to still stick around school after all. :3