A380 a decent freighter?? A decent parcel carrier perhaps. Freighter - no way. Airbus was TOLD to build a nose door by the freight airlines years ago. I think I can even dig up a diagram of an A3XX study with a nose-door. Finally they came back & said it was "too difficult".
With reference to the previous B747X cancelled thread: It seems now that we're looking at a 6-9 month delay while additional enhancements/refinements are made.
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rgds Rat