Example: Medical right to privacy- HIPAA has a list of Related Questions in the right column. Would it be feasible to pull related questions from other stacks into that right column list, e.g., Can a past psychiatrist share information with your current psychiatrist? from Health.SE?
Please note that I am not suggesting that we migrate related questions from other stacks into Law.SE--just link to them if they are indeed related.
If I had to rate Feature Requests, I would give this a 'medium' rating, i.e., it would be a helpful addition to consider down the road, provided it is not a technical nightmare.