@Riot Can Veigar get an E that Stuns or a Kit Based on Trapping
The initial nerf gave the impression that Veigar was intended to trap his opponent while the buff to remove cast time and reduce delay time imply he's still supposed to stun with it. Then a buff comes that stops enemies from dashing through it which goes back to trapping again.
Right now Veigar is suffering from an identity crisis. His kit is based on the premises that he can stun his target while he currently can't. I understand that his old E was a a bit OP but Veigar either needs a completely new E that can actually stun a target without being OP or a new kit that benefits him for trapping targets.
The Final Boss shouldn't be forced to cower under tower defensless the whole game
Edit:
The main problem with his E in my opinion is that it is strictly situational in both offensive and defensive situations which isn't good for an immobile character with only one spell to use either to engage or disengage. It can only be used offensively if you have a teammate with cc themselves to help you land it, and it can only be used defensively if the opponent has no dash/blink. The cage may stop dashes but anyone with a dash can easily dash out to you before the cage is up.
Veigar should be able to more reliably use it to either defend himself or engage on another character. Having it purely situational for both just makes playing Veigar feel awkward and in danger most of the game.
rework in line with what you suggested and what Riot wants for some reason