Board Thread:Naruto Discussions/@comment-24577388-20150224012723/@comment-5233512-20150328224048

It's somewhat unfortunate content-wise that not many known Uchihas unlocked the Mangekyō Sharingan. I standby my idea of goods friends and family simply being able to trade their Mangekyō Sharingans.

In regards to Bolt and Salad, I believe it was inbreeding that made their genes "strong", so now that the Hyūga and Uchiha bloodlines have been diluted, their respective strengths in those areas would have become weaker.