KJ ult solution?

There is some resent concerns that a free ability of Tejo can easily break the KJ ult . Previously, it was also controversial that a 200 cred breach ability can break the ult, but now it is worse. There are some proposed solutions like making the Tejo E do less damage to utilities or make the KJ ult capable of tanking more damage , which will make it a nightmare to break it with regular guns.

How about this, KJ, can pull back her ult once it is deployed for a limited amount of time, like chamber can with his trap? She can bait out some utilities or even gunfire? What do you think? They then do not have to change other abilities/game features "around" the KJ ult?