I've put a wiki on to the thread. What I think would be useful would be getting a note of those aircraft with a working wifi available for passenger list, so any updates there would be good.
To find out which aircraft may operate your flight use this URL:
Code:
http://www.flightradar24.com/data/flights/ba174
replacing 174 with your actual flight number. It's not totally reliable and it only indicates expected movements a few days before travel.