Documenting the F5 LTM config

Hmmm. There is no such utility I'm afraid, however, you could use iControl to build something yourself perhaps?

I've been using Python to pull simple details like uptime, device time, timezone, TMOS version, boot location, hostname and the like. I'm no developer but it wasn't too hard. (You can see what it looks like here: https://github.com/jedelman8/cpal - look in the vendor folder but note it returns the data to the main function rather than just printing it - easily modified).

Doing the kind of thing you're looking for will be somewhat harder but you could start small list the APs, RDs and VSs and build upon it slowly I'm sure.