Yes, Brian had interest in various equalizations and corrections.
He was however very realistic in his expectations.
As mentioned, his first efforts would be to adjust the speaker itself, before any electronic means.
I remember a trip we made at one of the SHOWS in Vegas. The designer of the Emerald Physics Speakers was all excited about his Speaker Correction/Room Correction System and invited us over to his Room after hours. He said he wanted to hear what a real Speaker Designer thought.
Brian sat in the sweet seat, and Clayton went about excitedly explaining how it worked, to which Brian said, "Just play something".
I know Clayton expected Brian's jaw to drop, but it didn't happen.
First thing he said was "Where's the High End"? "you've got no High End".
Well, things went downhill from there, and we soon left.
Brian and I discussed this, and let me assure you while he was not impressed, that does not mean he was disinterested.
But, back then the "equalization/correction area" was just getting started and Brian was keeping his options open.
That said, he was not going to abandon his analog means and driver performance means.
Later on, we also were also looking at the Lyngdorf Systems, but it was difficult to acquire a unit to play with.