I feel like this would be a little overwhelming for some people, especially with how the site doesn't load easily for a lot of us. If there was a tabs system in place that we could extend, it might be different, but I personally would have a hard time even wanting to read posts for a side of a game that doesn't involve me or my characters, so I wouldn't really want to put that onto anyone who decides they only want one character.

I think the easiest way for now will be to just have a clear break between each character in those posts that players make for multiple characters. By break, I mean either putting each character into individual hiders or having the solid, horizontal line distinguishing between each character, or even having a title distinguishing which character is involved. 

If anyone else has any opinions on what they'd like to do, I'm all ears, though.