I've read that the race promoters for the other races aren't happy because it makes Abu Dhabi seem more important than their race....
"But the really powerful opposition has come from promoters of other Grands Prix on the 19 race calendar, who have been on the phone to Ecclestone since the announcement, questioning the justification for the final race, in Abu Dhabi, to be considered “more important” than their race."
http://www.jamesallenonf1.com/2013/12/double-points-idea-for-final-f1-grand-prix-to-hit-the-buffers/
That would be a lot of money and pressure on FIA to remove that rule. I hope they can press the issue and force FIA to back off this one.