Thanks Nick for those tables of Uranus and Neptune data. I think exactly those would be useful to include. Central meridian longitude tables would probably occupy too many pages, and anyone involved enough in observation of these planets will know how to get these data from WinJUpos anyhow.
If it had too many more pages the Handbook could no longer be stapled as one unit of folded A4 and would have to have a glued or ‘perfect’ binding, which some would not like, as it could make it harder to keep open flat.