Companies evolve over time, and so do workspaces.
This means that custom fields can become less or more relevant over time.
Similar to how we can archive tasks, I'd love to see the option to archive (but not delete!) a custom field.
This would benefit companies with:
* A lot of historical information. Who wants to store their information in one place (but not delete!)
* A lot of experiments and want to store the results but avoid cluttering their fields simultaneously.
* A fast-moving nature that evolves over time, and as a result, would like to archive a custom fields to keep things neat and tight.