I'm in favour of giving Scotland Tanist law. However Celtic Scotland did not exactly use that system.
As of the rise of the House of MacAipin, the Scots used a system where the crown alternated between two branches. This cannot be accurately simulated by any of the existing inheritance laws.
Tanistry mostly fits, but it'll be more likely to pick uncles of the existing king because in practice it tends to work like Seniority, which is not exactly right. Perhaps if combined with an event that forces the title tanist to be given to the 'other branch'?
Then again it doesn't perfectly fit Saxon England either, but it's the closest thing to a 'dynastic elective' law we have.
As of the rise of the House of MacAipin, the Scots used a system where the crown alternated between two branches. This cannot be accurately simulated by any of the existing inheritance laws.
Tanistry mostly fits, but it'll be more likely to pick uncles of the existing king because in practice it tends to work like Seniority, which is not exactly right. Perhaps if combined with an event that forces the title tanist to be given to the 'other branch'?
Then again it doesn't perfectly fit Saxon England either, but it's the closest thing to a 'dynastic elective' law we have.