If drafting HEX will be anywhere near as fun as drafting Magic, then there will be tons of players trying to trade the packs they receive from the Kickstarter rewards for platinum to enter more events. I expect people to buy boosters for the equivalent of $1 because of all the supply from Kickstarter rewards.
It's definitely possible. I imagine that Crypto will probably want to push out their first expac as soon as possible to alleviate this. Who knows, though?