I have through no choice of my own flow BA several times to Hong Kong in the last 12 months and concur totally with the opening post, tired old aircraft, tired ol entertainment and tired old crew in most cases.
The fly BA rule has gone next 2 trips to Beijing this weekend and Hong Kong in January booked on EK, picked up, flown from my local airport (MAN), new superb A380 and excellent in flight entertainment.
Unless I have to I am unlikely to fly BA again.