So this is what Yoshida said in the live letter:

f; how about BRD?
y; People were worried it was going to be nerfed a lot
y; BRD is too useful taking over other jobs position
y; No matter what content you go into, it can be used
y; There was one thing that was brough over as additional that was too strong
y; so we changed there
y; silence is going to still be there so don’t worry



ok so? Change to mobility? Change to songs?

I really dont see the point of releasing part of the information and leaving us once again with doubt