What shall we do to convince him? I'd be happy to email him or get in touch with him. Do you have any refs to his email?

Personally, L/R delay is the very first and only bad thing I noticed in my car installation, and that used to bother me so much. I believe I got used to it, but every time I move my head towards the center of the car I hear the sound as it is supposed to be, and I can really perceive a quite noticeable difference. I believe I am not the only one who would benefit from such a thing.