I understand the anger over cavalry nerfs. I'm really not sure why they ever did them, cavalry certainly didn't seem to be particularly powerful over the barrier of cost.
HOWEVER, what the hell is the bitching about Gen XP bonus for? That was the most godawful broken system ever. What other game have you ever played where you simply get better at a constantly faster rate without any sort of barrier? The former Gen XP bonus system was a snowball rolling down an infinitely long hill. (The technical term is a Positive Feedback Mechanism.)
The game will be fine, and will not implode in a day or two because the patch isn't perfect.