FINAL FANTASY VI through FINAL FANTASY X : Blend of fantasy with other genre-worldbuilding elements, wider casts of characters, and a customizable party
Electric-type cards in general tend to have lower retreat costs ( Electrode has a free retreat, for instance), allowing you to easily swap out cards as needed, keeping your bench and Pikachu exs attack power at full capacity
Then, you are left with an Equipment that can be used to turn any small Creature you control into a massive threat
For starters, you only really need one copy since the Ace Spec rules dictate that only one can be used per deck
This isn't quite a full competitive mode for Pokmon TCG Pocket but is certainly a step in that direction, and will be the first proper competitive test of which decks are best, with both Mewtwo ex and Charizard ex having dominated so far