OK -- tried it and was about ready to throw the machine out the window. I know LL is ambitious and houses some considerable talent, but part of a successful firm is to poll the TPV and dev groups as to see what the general populace is pushing for regarding chat organization.
Also, it's time to scrap the monolithic chat design. Make it MODULAR. If LL had the smarts, they'd have a blog page where people could see screeenshots of widgets used for various chatting systems. All you do is look through the list, click on the type of chat interface you want, and *poof* it installs. That way you can have community developed chat modules based on V1, V2, V3, and creative designs.
CHUI was a disaster -- it's slow, clunky, only works for people with massive displays, and requires way too many clicks. It's time to make V1 the standard and then supply plug-ins people can use as to customize the chat in their viewer.
As for the general viewer, it's time to scrap it and restart as to make a unified renderer that works better with mesh and other kinds of data. Patching header files and adding bindings is killing the codebase.