Regarding Veigar changes
I understand the need to nerf his E, as it is a very long range stun that applies instantly (assuming it is correctly positioned).
I like the change to his Q, but not really in the context of what they did to his E. Many players use Veigar's Q to harass in lane, but that will be much harder as it is a skillshot. Due to the change that his Q hits two targets, it does make it easier to land harass than if it was just a normal skillshot, but they're using it to promote farming, which it does. However, since you'll likely be hitting two minions with it most of the time, you're going to push the lane. Good thing he has high mobility and reliable cc so he can afford to overextend!
They could just make his E sort of like Anivia's Q. Initial cast just sends out a skillshot (does nothing), but when you press it again it can put his cage there. This way he has a way to more reliably stun, but without the absurdity of what it is now. Additionally, there is still skill to landing his stun, while allowing other players a chance to dodge (at least at longer ranges).
Maybe their proposed changes will put him in a good place, but they don't seem very fun for people who play Veigar.
Edit: Wording