I wonder if the BRF will go down the Swedish route of insisting that anyone in the line of succession must be educated in the kingdom or lose their place.
I hope not. That seems like a very random rule, and I would think exposure to another culture is good training for a monarch. If you want to manage who is in the line of succession, there are probably better ways.
And the problem isn't the line of succession but the perks of being in the family...housing, funding, security, etc. That's what needs to be revised.