I love WaveLab for many things, and especially the way it does things that no other DAW/app can do. It’s essential to my workflow.
That being said, the spectral editing is not at “power house” level. It’s probably nice for those who have no other spectral editing choices, a good selling point maybe, but I really wish the montage had a way to send audio clips to an external editor to do the editing there, and then manage the versions via a playlist/lane/take etc.
I think it’s better to focus on doing smaller and more specialized things REALLY well, instead of trying to do too many things at just an “OK” level.