The current community already knows and loves the game, so why bother digitizing something they already enjoy in its physical form
Over the years, new card types have been introduced that look quite a bit different than your standard Pokemon card
Card Text If you have a "Supreme King Gate" card in your Pendulum Zone, except "Supreme King Gate Magician": You can send 1 "Pendulum Dragon", "Xyz Dragon", "Synchro Dragon", or "Fusion Dragon" monster from your hand or Extra Deck to the GY, and if you do, Special Summon this card from your hand
This means that you can effectively untap mana rocks such as Sol Ring or Mana Vault or loop powerful enters-the-battlefield triggers such as Dockside Extortionist or Spellseeker
For the cost of two C Energy, it does 20 damage times the amount of Energy attached to BOTH Active Pokmon
A single core set might get you started, but the real meat of the game is in the extensive campaign expansions and mythos packs