Glueball: If it became custom and practice to land in a "farmer's field" in a jet transport following a fire warning or similar engine failure / thrust loss on takeoff then many lives would be needlessly lost. There is a world of difference between 180 tonnes at 160kts+ and 1.5 Tonnes at 60kts-ish - that's why a PA28 demands a different approach to a B747. Capt. Marty did the best he could with what he had - the fire consumed the aircraft's ability to fly, and that is why the aircraft was lost. Landing in a "farmer's field" (or Le Bourget, or even an attempt at an RTO for that matter) would have made only a small detail change to the accident report.
BEagle: If they had not taken off the accident would not have happened. Well done. But take note: RTOW was not a factor in this accident, if they had been at RTOW minus 10 tonnes the fire would have been no less unforgiving, and the end result the same.