Anivia Has No Play Making with Her Ult

It only stops it because she is knocked out of range for it. Also she has tons of play making. You really haven't seen a good anivia player. They are scary.

Her ult can set up her burst combo each time it's available, I'd say that can make some plays. Or a well placed wall in a choke point sticking several targets in the circle can be awesome. It makes plays, it's just not flashy like other R buttons.

if they change anivia at all i think it should be for champion interaction with her wall. Vayne and poppy for example should get the stun effect if they hit someone into the wall with their respective moves. would generate a lot of fun new tactics with anivia

For me it's just really boring to use, it does mediocre damage and you usually only use it as a quick R+E double damage