We were looking into using Form2Content for a project. Here are some questions we had and we were wondering if there was a way to have them work:
1) Multiple sets of tags for an item. Two separate fields that had access to different sets of tags. Having one tag field could possibly work if needed, but on the front end only one of them should be searchable (basically having a tag search that only checks one subset of tags). Due to the tags being a core Joomla thing this may not be something Form2Content needs to handle, but we thought we should ask regardless.
2) Multiple dates per item. The user needs the ability to just add as many 'dates' (with a calendar field) as needed for each item. Possibly we will need to search by these dates (within a given date range from the visitors).
3) Having multiple subsets of data. One 'section' of each item would need to be able to add one or more as needed, each with a small set of fields. Much like dates above, but with multiple fields per sub-item added.