Will the Veigar changes turn him into an "ult or useless" champion?
Honestly, I think I'll be flabbergasted if the new Veigar actually manages to stun anyone.
The Q changes should be better for clearing large waves of minions, rather than relying on Dark Matter or taking forever to farm it with Q. It going through the first target and being able to hit a second sounds like Lissandra's Q, which means he'll be forcing enemies further back.
Without a stun, I'm highly skeptical that his Dark Matter will hit, since your opponents can (and should) dodge it. The reason Veigar doesn't drop more of these is the fall time requires a stationary target. Yes, these changes might see more Dark Matter falling, but it'll be as a zoning tool inside your zoning tool, as oppose to a damage ability falling on a stunned target.
#So as you're Zoning your foe inside your Zoning tool with your other Zoning tool, you'll fire your Q as another Zoning tool... This sounds like a horrible meme that ends with you saying "Ain't nobody got time for that!", pushing R and killing them.
Reassure me Riot, because I feel like this one might just put Veigar out to pasture.