Saying reshuffle was a long undiscovered bug was a pretty weak excuse on KI's part, especially in light of that fact that they changed the card previously, which would indicate they were reviewing it.
As you may recall they changed juju treasure cards from 2 pips to 3 pips believing this would somehow reduce juju spam (they even stated this in a KI live episode).
To me this change was obviously instituted to try to address bad juju, which of course is only one issue among many and then created an entire set of new problems.
PVP needs an over haul, they need to get a beta group together of experienced players in my option and stick them on a test or dev server just for this purpose to play with different changes. Testing things out in new tournament modes is not going to get us changes fast enough to keep players or get new ones imo.
