As you all know, there will be a reset at the end of the stress test, which some of the players dislike.
In another thread here a developer noted, that there are a lot of unreleased cards in the games database, right?
If so, why not combine the reset with the release of some new cards? People gonna be very hyped to try out the new cards. Therefore they wont mind starting from scratch that much. In addition some of their currently precous cards and upgrades might lose value because of the release of new cards, so the reset will hurt less.