the biggest take away that nobody is talking about with the hafu/Ben Brode interview

When he mentioned changing up the arena "rules" week to week, I saw that as the biggest change that hafu seemed to just stroll right over. So take a step back and think about it. That destroys sites like heartharena, which at first thought, I was really happy about screwing over everyone that uses that crutch to enter the arena. However, I started thinking by removing that crutch it could just leave the players that know how to draft and play in the player pool. That's where my question starts...do u think this makes arena better for the hardcover vets or would it actually make it worse, because the players that u sometimes face with stupid decks that u can squeak out with skill will no longer be there?