So far the profile is how I left it on day one and I'm ready to put some effort into it.

It'd most likely be a tabbed interface kinda like vBulletin's. I'm ignoring Visitor Messages for now.

In particular, I want to focus on how to display a user's post/topic/roleplay history.

Any ideas on how to organize this data in a UI?

- In vBulletin, you were either enumerating over a user's posts or a user's created topics in one big list. And you'd have to apply "Advanced Search" filters to narrow it down.
- At the very least, I'd like to differentiate between Roleplays and Off-topic stuff. 
- On top of that, how could I make it easy to skim a user's IC posts? How could that be expressed in a UI?
- What's the simplest, most intuitive v1.0 approach?