What part of this do you think adds to the conversation? I mean, besides stating the obvious.
Keep in mind, the information about the Glyph changing to a 30sec CD from 15sec is datamined information by MMO-Champion, not an official change as per Blizzard. Until the text is in blue, and not green, over there, take it with a grain of salt.
Plus, I'm pretty sure that change will be altered/revoked entirely before the PTR ends.