Veigars E

I dont want to say that it is to strong, but compare to champs that can build some sort of "terrain" or "wall" or aoe slow/stun of some sort.

His E spawns a pillar that slows those around and disrupts channels, can still maneuver around it.

Her W is an impassable wall and disrupts channels, can block paths in jungle at max rank.

His ultimate does damage and traps the champion in a circle about the same size as veigars stun.

His W spawns a long thin wall that slows enemy champs who walk through it.

His E is spawns a large circle that disrupts channels and stuns for 2.5 seconds at max rank.

Does anyone else find veigars terrain/wall to be very powerful compared to the rest? Especially in the late game? It controls so much of the team fight. I just feel like veigar who is all ready such a bursty champion ( Im not saying to nerf his burst ) shouldnt have a spell that stuns for 2.5 seconds. And yes you can stand inside the circle and not be stunned, but that still sets him up for a w and q, heck even an R. All im saying is maybe tweak his E, mabye make the stun duration less, maybe make it a root, or maybe even make it a little bit more like Karthus W ( karthus has to work alot harder to land abilities then veigar does with less burst )

What do you guys think? Is it fine the way it is? Or should it maybe be looked at.