Personally I would like to see more interactions between humans and youkai outside of an incident. Most of the mangas focus primarily on youkai to youkai conversations (Lotus Eaters for the most part, all the fairies ones, even a solid chunk of CDS, etc.) with the only exception being WaHH (for the most part, even though is mostly just Reimu and others). FS had something going for it (at least, in the interactions between Kosuzu and Aya) and I would like to see more of that if at all possible.