I really don´t know why you are so angry... he already changed a ruling about bark skin.
about shield master: yes, it is a nerf, but they already stated that the feat was badly designed, because you now have a standard routine that forces the enemy to contest every single round. It was never meant to be used that way. Now, you have the option of shoving after your attack. That will allow you to retreat, shove the enemy into you own friends, shoving them prone if another melee combatant takes its turn after you, and so on.
I´d say there is more bad design in that feat: it is strange that the one bonus depends on the fact that only you are targeted by a spell... why not giving that bonus all the time. Why is it important that you are the sole target of the enemy fireball...?