Currently, the engine sounds in the cockpit are far too loud during arrival. When fully configured on the ILS, the engine sounds should not be as prominent as they are now—completely different sounds should dominate. I have watched several videos and made comparisons. Lowering the engine volume is not a viable option, as it results in no audible sound in the cabin.
You should seriously consider rebuilding the entire sound mix from scratch, as there are too many areas that need improvement. Simply making small adjustments here and there will not be sufficient. This issue has been widely discussed, as seen in numerous threads about A350 sounds.
And this is IniBuilds A350 on arrival, way too loud engine whine.....
https://youtu.be/66C0lVz8UeI