Having a character die would be interesting, in terms of drama and how the other characters react, but on the other hand, maybe it would make things unnecessarily complicated? I dunno. Like you said, it's probably better to just develop the characters first.
Also, I just thought of an episode idea, but I guess I'll wait a little while before bringing it up.
Something I think we should build on is why Megumi and Aoi hate each other. I just feel like there's sort of a history there. I mean, yes, there was the war that brought on Fantastic Racism
, but why each other specifically? Maybe it started with just one of them being a racist douche, and then it went back and forth?