ADC one isn't too bad, should really get balanced out soon. I think Graves is a little overtuned, and there will be a couple of ADC's (im betting on jinx) that will synergize too wiell with the new items, but otherwise that is a good change. Rift Herald is to make up for the TP nerfs, that's supposed to be the compensation for your Nasus, especially since he JUST got buffed from the juggernaut items. Herald might need some coordination from your jungler or mid laner, but the buff really helps out.
I completely agree with the minion wave stuff though. All of their changes to wards and income make for faster paced games; changing minions to prevent lane freezing was entirely unnecessary and frankly a little stupid. Why would they remove such a huge macro aspect of the game? It is not worth reducing the skill cap just to reduce the skill floor. It will make professional play completely unwatchable. Most macro based teams will fall completely out of favor, which I particularly hate as a Cloud9 fan.