After playing a game as Veigar after his changes.......
I find Veigar's changes great for his gameplay.
During laning, I allowed my opponent to shove my tower, which allowed me to easily land double Q's to stack more AP for the lategame(I ended the game with 1017 AP without my last item/elixer). It's also great for kiting with his stun wall if the enemies chase.
When I caught my opponents out of position, I simply placed the E a little behind them, and they would walk right into it, not to mention the buffs on his W now allow him to hit them in the stun area more often.
His Ult AP ratio nerf was completely unnoticed. I could literally 1 shot the enemy adc/mid laner with a single ult and they would be dead. With the more beefy enemies, I stunned them, threw a W, ulted them, and they were dead.
Great job on this one, Riot Balance. While 80% of the "ex-Veigar mains" continue to complain about the changes, I (and hopefully other people) will continue to pubstomp as Veiger.