If you're anonymous here, I need contact information or an LJ name to follow up.

In my experience, the LJ games I've played that are goal focused (I've played in a few very prominent ones) end up having to resort to chat, and then post chat transcripts. While there could be room for a journal side, I envision this mostly as a group game (more similar to tabletop than what you seem to be used to), with characters primarily staying together and interacting with challenges in a group. Some kind of chat seems more appropriate for that sort of thing.