Riot, I would be fine with Veigar changes if you added this
From the beginning of the cast, before the stun walls pop up, the pillars appear.
The pillars stop all enemy movement and dashes from enemies moving both from the outside into the box, and from the inside out. Blinks still work as usual.
If this happened, I would be fine with it, as it would allow Veigar to have a chance against the ever increasing mobility that this game has. Other than that, the changes that you gave him are a straight nerf and veigar doesn't stand a snowflakes chance in hell against mobile assassins like Zed, Fizz, etc.