If you already have a Gamer Launch account connect your Facebook account on your user profile first before using Facebook connect to login. Otherwise you may end up with a new account.
Since one way to get gear every other week is follower missions, getting to 100% success chance is the goal...
If you don't yet have Blook - its extremely easy to get him, and he adds success % to ANY mission !!
The new legendary follower is from a quest AFTER you get your 715 ring, she also adds success to ANY mission.
From other boards:
>>The following traits are permanent and will remain while the other traits and abilities do get rerolled: Angler Bodyguard Combat Experience Evergreen Master Assassin Mentor
(for more info) http://www.wowhead.com/item=118354/follower-retraining-certificate#comments