Peter,
I think that this dubious definition is the source of many disagreements. Less sonic signature does not mean that it should carry more information. The process of sound reproduction is selective - the information carried in the recording is always manipulated, some information is fortunately lost during playback , as it would affect our enjoyment and illusion and other is enhanced, making it more easily perceived. One of the main problems of some digital is the excess of recording information, making it sound artificial and tiresome.
Well, I qualified my statement by writing "...what is more important
to me...." I am not trying to define anything or make the connection you are suggesting and I highlight in BOLD. All I am saying is that I prefer systems and individual components, that impart less of their own sonic imprint on the music. I'm sure my system and components are flawed in some or many ways, yet I have chosen them because during auditions in my system with most of them, they got me closer to my recordings. I have recently experimented with cables and power cords. Some sounded great but made each recording sound similar in both listening perspective, some tonal aspects, and soundstage information. I selected the combination which revealed greater differences between my recordings, regardless of how much "information" the component revealed, although, there was usually a correlation between information retrieval and transparency to the recording.
Perhaps my definitions are different from yours and we may have different priorities. Certainly, we each choose things we prefer, for whatever reason we decide.
If you describe the SAT arm as "enhancing" bass and presenting a closer listening experience, that is an interesting observation to me. If it was only based on one recording, then I agree with you that it doesn't say much about how it would sound with other recordings nor how transparent to recordings in general, it is.
I must have presumed this was a sonic attribute of the SAT arm, and not how it sounded relative to the Graham on just one recording on vinyl and then compared to the same recording on tape. Yours was a very specific observation and not a general one. I apologize for that misunderstanding.