Making the Vieger Changes not a complete nerf while staying true to the spirit of the changes.
Have veigers wall act as an azir wall for enemys trying to escape it during charge up. (In otherword block dashes and bounce them back) This prevents him from getting the instant stun that riot is trying to nerf, but still keeps him from becoming completely useless against any character with a dash (every single popular mid-lane assassin). After the charge up it stuns.
Stun no longer useless, and still accomplishes the change riot wanted (namely no more instant stun, though why they are so anxious to ping this characters CC is beyond to me, hes already not played)