Better to use the limited time to *train* lots of different types of failures to competence.
Despite evidence of previous incidents where running out of fuel resulted in jet transports conducting loss of all engines "dead stick" glide and forced landings, it should be noted that few jet transport simulator training syllabus address dead stick landings.
While it may be seen as too time consuming in the simulator to glide no engines from (say) 25,000 ft, the value of such exercises is beyond price. The Air Canada B767 "Gimli Glider" captain who successfully forced landed after running out of fuel at cruise made the point that if only Air Canada had given crews training in dead stick landings he would have felt more confident in pulling it off.
Traditional box ticking simulator exercises ad nauseum need to be reviewed to give crews practice at the rare emergencies of forced landings following loss of all engines and also ditching practice. If pilots have never practiced this what are the chances of success if it really happens? Answer: Zip.