Lets be honest here, we all know that the 12x xp boost is going to be brought back in some form. No offense to Bioware, but there is almost TOO much money to be made there. I alone would pay at lest $25 for it, maybe $50, and I'm sure others would be willing to pay similar. That would be a heck of a Christmas present (HINT HINT, BIOWARE). Anyways, what is the reasoning behind the delay? Surely it could be added to the Cartel Market and Collections fairly easy.
Anyone want to take bets on when it will brought back?
Upon further consideration, some parameters would probably need to be placed on the 12x xp boost:
Xp boost only lasts until you hit level 55, so you still have to enjoy the new content from 55-60.
Requirements to use the boosts, such as a level 55 and a reasonable legacy level, like 20 or 25. This would mean that you would already have one or two 55's and know how the game works.
Boost could be unlocked per character, or for your entire legacy. Pricing will vary.
OPTION TO TURN THE BOOST ON OR OFF.