only a handfull of professional posts so far, but at least they are worth reading
It's useless to discuss engine failures and/or maintenance/dispatch so early with so few facts.
The aircraft is quite capable of safe takeoff with the loss of a single engine. A more significant failure would typically leave debris on the runway.
Engine fire reports should not be taken as indicative of a primary failure condition. They are just as often associated with secondary effects after the aircraft gets into trouble.
If there are any links to close up pictures please post .