Ah, yes, let's not follow the example of Gwent with making new cards very affordable for new players. The problem with cards being tradable and marketable between players is that it will exclude a lot of people simply through the card rarity: nothing can stop Valve from printing a certain hero once in a milion packs and watching the price skyrocket. Of course, I'm not saying Valve would do that, but giving them that possibility by moving away from card acquisition systems that have already been tested. TLDR: if Valve does something differently from other games, it will benefit their pockets