I have no one to regularly play with! Anyone want to team up? Level 16 here

Use a chat group ^^

They work in a similar way to guilds =P

I see guilds pop up all the time in discussions but what would be the point in Onigiri?

There is no "guild" type of content, just maybe organizing runs of dungeons with other people. And chat rooms suit this perfectly.

The only thing that's needed that I think is just the chat room UI be improved with stuff like when someone last logged in and channel. Also if location wasn't buggy half the time.