Originally posted by: Hotsuma
How do we know we've seen all of the Byakugan's secrets?
i think we've seen all of it, if not all of the 'devastating' abilities of it. we might not have seen the other little things that it does but there isn't an important enough character to develope with the byukagan. however, sharingan is crucial to the 2nd main character of the story. kishimoto wouldn't have some super secret ability that byukagan has but it won't be developed/shown.