I generate a lot of photo index pdf file with 6 pictures in each page. I will like to speed the picture document procedure. Now what I do is copy from another pdf file 6 text boxes already grouped and aligned to match the picture index file and edit each text box if necessary. Acrobat doesn't allow me to copy and paste multiple pages text boxes so I have to do each page one by one then un-groupe the text boxes to be able to edit them. I will like to insert 6 drop down menu text boxes to an existing pdf because the comments are repeated, or if someone have a recommendation it will be appreciated.
Adobe Bridge (part of Creative Suite) will export contact sheets directly to PDF, with lots of formatting options.
Adding comments or form fields to the PDF would have to be done in Acrobat.
Another option would be to generate PDFs dynamically using scripts on a webserver - libraries such as TCPDF (which run on PHP) can easily lay out pages of a PDF based on selections of data or responses to HTML forms, and sometimes it's easier to install a local copy of PHP and Apache, so you can generate these dynamic documents without needing an external server or Internet connection.