Ideas often cover multiple topics or are large in scope, so it's difficult to promote to a single epic for a single workspace.
It'd be extremely helpful if I could duplicate an Idea into as many sub-ideas as needed to cover all the topics. It'd be important to keep them all connected for vote and comment tracking, and so the author is notified about progress on each one. Maybe it's like having a "roll up Idea" concept that's similar to roll-up releases.
Or please let me know if you have suggestions for managing large-scope ideas!