Are there any plans to add custom metadata?

[Martin]

Are there any plans to allow us to add custom metadata to pages and templates that could be pull into Jira, Database or Whiteboards?

This would allow for killer reporting capabilities. 

[Rob Hean]

@Martin  - out of the box I believe we're limited to "Content Properties" - however - this can't be pulled into databases/etc. afaik....

Synced Blocks offer an interesting way to pull data across to Jira, but that's intended more for reusable content to share in multiple spaces vs. any kind of metadata for tracking/management.

[Aron Gombas _Midori_]

There are several third party apps that offer meta data! Start this this search and also make sure that you click the "Similar apps" tab at each listing. 

Practical tip: I would start my trials with those having the best reviews and largest installation counts.