What if Camille's ult was QSS-able after 2 seconds or if she dies?

That way you have some counter-play, while also not fully taking away all of the usefulness of her ult's primary functionality as an "inescapable arena/cage". If you could escape it by any means other than just walking out of it, then it is actually worse than J4's since with his, it creates actual terrain which you cant just move through (unlike how Camille's ult allows for everyone else but her target free roam with in and around her ult besides the initial knock-back). J4's can be used against you too such as if Vayne condemns you into it, you get stunned, or how Bard can stun you with his Q using it.

So what if after 2 seconds, her ult's AOE visual design changed colors (a visual indicator) and allowed her target to be able to use QSS and escape her forced entrapment, and in addition, if she dies, even if just 0.001 seconds after its activation, her target can QSS out of it? This seems pretty fair to me.