You broke it. Update is terrible. Shield idea not going to get it done in its current state. Challenges are brutally long and GW is too long too. Completing the dailys, challenges, arena, and GW every day is no longer a viable option for a lot of us who work for a living and have a family. Sunday would be even worse. I think your "fix" broke the game. Please take into consideration the concerns and issues of the people paying for the privilege to play as well as those free to play people who really like this game. Be mindful of the firestorm coming, (as is evident in 90% of the posts above me).
This is an awesome game, my post is meant to be constructive. Please see it for what it is. I know this is my opinion, but I can already see, many share it. Here's to hoping a hot patch is already in the works.