GVA-LHR Group 0
Data point:
31/3 BA733 travelling economy; Group 0 called (twice). However, held at entrance to jetbridge for 10 mins, by which time a long queue had developed behind from Groups 1+; so when boarding started it was a bit of a scramble by everyone to get on.
Aside: no recognition as GGL(+GfL) on board. Personally, I'd prefer some recogntiion on board (e.g. with a complimentary drink in economy, could even be delivered prior to boarding via BA app) to Group 0. Perhaps both "benefits" is not an unreasonable ask..