There is a fundamental difference in the design concept between what the Key Editor displays and what the Sample Editor displays - and I am not talking about the difference of midi and audio.
But I don’t want to bother you with a sad story. Just know that, because of this design choice from many decades ago, the Sample Editor cannot be linked to the project view. Steinberg would need to abandon the Sample Editor for something like an Audio Object Editor.
At least that is my understanding of it.
So, it is not so much the lack of having the idea but rather that they trapped themselves into that corner long time ago and can’t easily get out of it.
I actually hope I am wrong in my assessment.