Love the idea of this flight and have always wanted to fly it, but I feel it is increasingly a quirky/eccentric choice of travel (not knocking it, i love quirky!). However, I would imagine BA would rather that BA1 was aspirational with broad appeal.
I'd like BA1 for a newer unique service. I'd love BA to go experimental green, maybe in a few years when technology has caught up... even something very small, zero emissions, business only, eg LCY to Paris/Amsterdam, Cambridge to Gothenburg, or domestic, even if it was a massive loss leader. Perhaps the successor to the Zunum Aero (pre Airbus E-Thrust). I would think electric would be quieter, and corporates lap up anything green at the moment.