The description for legal is
Refers to any question related to the application of laws in aviation
This description sounds broad to me, and might introduce questions that are largely unrelated to aviation. Now that Law.SE is established, questions that focus on the legal aspect should be redirected there, where answers can quote legislation and court cases.
The description for regulations is
Regulations governing aviation worldwide or in any jurisdiction. Specific jurisdictions should use a more specific tag.
which is sufficient for country-generic questions.
At the moment we have 207 regulations questions and only 30 legal questions. My view is that most of the latter can be re-tagged to the former, while a small amount of them are off-topic on this site.
What are your thoughts?