Ability to copy or template Drilldown fields

It would save a lot of time if we could copy or template the drilldown fields in gauges. There are a few ways I could see this being useful

• 
  Default drilldown field list linked to dataset. Code in a list of the most commonly used fields in a dataset drilldown, and default these in the first tab of any new gauge created using that dataset
• The ability to template drilldown fields and import them to a gauge.
  
• The ability to copy the drilldown fields from another tab in the same gauge