First of all, congratulations on the Topic Custom Fields 2.0 release. The features of your new version extend the usability and flexibility of wpForo to the next level. Yet, there is one issue you may want to fix for me.
I made a new form for a particular forum (threaded layout) and assigned a label and description for the 'body' field, and it works as I wanted for a new topic. The issue is "leave a reply" form for that particular forum then doesn't appear as default. Instead, it shows the customised label and description I created 'only' for a new topic post.
I think the "leave a reply" form should not use the body Topics Custom Field. In the other words, customisation of the field should not affect the "leave a reply" form.