The ability to view the version history of documents saved in the Files tool is really helpful. However, it would be helpful to mark/bookmark specific versions related to specific milestones. e.g. The version where images had been incorporated, the version approved internally, the version submitted to the client for comments, etc.
Being able to name or add a description to specific file versions that will display in the Version History will serve this purpose.
Currently, it can be difficult to keep track of which version is related a milestone, particularly on working documents which may have 300+ versions and be versioned up 20+ times in a day in the leadup to a deadline.