Well you've correctly identified a selection of the poorest lounges within BA's European network, and Bordeaux is indeed particularly poor. Given the relatively low number of flights to small airports with limited infrastructure then I'm not sure what the alternative is. Presumably - as is the case in few places - no lounge at all, which you suggest, but I am personally happy enough with quiet and hopefully comfortable seating away from the bustle of the main concourse. I'd like them to all be like MUC, LIN, GVA or FCO, or indeed Iberia's MAD T5S, but you are in probably BOD's best lounge.