Star Wars TCG had a great engine. The cards in your deck were credits to play cards from. Once cards got out of the game, your credits became more rare. This created a lor of diversion in gameplay. Something that I miss the current TCG field creation. Everybody looks at what another does. Some diversion might be welcome. And might be good for sales. In the 80'ies, we had Magic TG coming up and is still around. At that time, Star Wars TCG did extremely well. But due to license agreements, it faded out.