Empoleon DEX isnt popular right now in spite of minor new set hype, and the only other Water Pokmon to see any success or notable play at all is Kyurem EX , primarily in Klinklang BLW or Vileplume/Reuniclus BLW variants, neither of which are that popular
So, I give it a high score for synergy and value, but low on something new to the game, and that cracks my top ten, but not highly
Then again, according to a lot of players Ob Nixilis, The Adversary doesn't really need any help
Because Binacle is not that good, if you choose to use Barbaracle in your deck, I would use only a 1-1 line and evolve Binacle into Barbaracle on the bench, you can then have time to put three fighting energy cards on Barbaracle and when Barbaracle is in the active Pokemon spot you can use Boulder Crush every turn and do 80 damage