Well, you could drop down to the 'Suggestions' forum and 'suggest'
1) an in-design forum .
2)An 'Other book Design/Edit software' forum.
#2 could be split up as traffic builds.
Only Greenie Moderators can make forum structure decisions.
IMHO For now, ask here if you have post-indesign EDIT questions. Ask in Calibre for post-indesign->conversion issues