Lyle does have a high ink cost of 8 but grants 3 Lore points when questing and has stats of 6 Strength and 4 Willpower, so he's a very valuable card
Some Characters are 'singers', which means they can be used to cheat out more expensive Song cards
Perhaps they could take a more obvious approach with their rarities like Magic: the Gathering, with its Prosperity cards in Outlaws of Thunder Junction, or even add another layer of Disney magic to cards like with Star Wars Unlimited's Hyperspace rares
That being said, lets go on an adventure
I was a Magic: The Gathering player back in high school, and the prospect of a game like Magic coming along with the Disney properties attached was almost too much to bear
Clearly, Set Championships are not the unstoppable hype machine they once were