Here are my thoughts on one potential new/improved product that Bryston should be working on.
First a preamble -- Bryston has managed to create a new version of its op-amps that have astonishingly good S/N numbers (~140db), and they sound amazing. These are used in the BDA-1.
My proposal is a new 2U tall stereo pre-amp combining the circuit topology of the BP26, but replacing the op-amps with those from the BDA-1. The power supply would be in the enclosure, on left side on a vertically mounted (separate board), separated from the remainder of the enclosure with some hefty metal (to keep any power supply noise out). The analog board would be the updated BP-26 -- possibly using the solid state analog volume controls used in the BP-16, and microprocessor controlled relays to select the input source. (Like the BP26, it would have 2 balanced inputs, 6 unbalanced inputs. (possibly eliminate the tape loop), 1 or 2 unbalanced outs, 1 balanced out). The second (possibly optional board) would be essentially a BDA-1 (minus power supply) without the output op-amps (they would not be needed as the signal from the dacs would go into the op-amps on the analog board.)
An advantage of this approach could be as much as 20 to 30db lower noise than the BP-26.
I'm not the director of engineering at Bryston, but I have met the guy (Chris Russell) and he strikes me as being very
smart -- I'm sure he has thought of this -- and I wouldn't be surprised if they are considering it.
Or perhaps they just update the BP26 with the new op-amps and leave it otherwise as-is. That should be relatively quick and easy to do. (Either option would make a nice break from the difficult and long project that the SP3 has almost certainly grown into.)