The Difficulty with Trading Card Games
I understand the business model for setting your card games up like this. You can generate a steady interest among kids by creating card games that fosters a sort of "planned scarcity" of goods. It's not like the card game company couldn't give everyone what they want, by printing more of the popular and most useful cards, they simply decide not to.
Booster packs have always been what I don't like about the current trading card game industry. Most of the trading card games in stores today require kids to buy piles of useless cards in order to get one or two good ones. My local game stores behind the counter area is stacked high with old cards that nobody wants, because their trading card game insists that chance discovery is preferable to everyone getting the cards they want.
It doesn't have to be like this. A collectible card game can be just as exciting when everyone has access to all the cards. What's more, the waste of paper and dollars is sharply reduced if a collectible card game is modeled on full access to cards.
Where the play and collectability of a collectible card game centers on the characters and a full deck, game balance is also upheld. If everyone has access to the same cards they can test their talent rather than their wallet.
It's like a lottery for kids, as they purchase booster packs to hopefully pick the winning card. The other downside of a trading card game designed this way is that kids can spend themselves into an unfair advantage - affecting game balance and putting entry level players at a disadvantage.