I know exactly what you mean, the sounds were changed to sound the same whether you succeed or fail a combo. I'll use DRK as an example.
https://youtu.be/jaGxC7wnBDo?t=819 Here is the successful combo sound effect in the Shadowbringers job actions trailer.
https://youtu.be/WCVcgZ8dtD0?t=236 Here is the changed sound effect in the Endwalker job actions trailer. It's definitely more muted.
