The thing is, even if there is a toggle for dialog volume, the other characters would practically be booming since their volume is normal. The proper fix is for CDPR to normalize Geralt's dialogue volume and repack the game files.
But yeah, I guess a separate dialog volume to help a bit.
Yes, that's true. I can hear the English voice actors, which are the bulk of the voices, just fine but the American ones are a problem for me. Unfortunately, they are the main characters so hearing them is pretty important.
I agree a remastering of the dialog of the mains (Geralt, Triss etc) would be best but seems unlikely to happen. I wonder why it's like this in the first place. Maybe the problem is the dialog came from two different studios (US vs UK) and they just didn't match the volumes very well?