Re Satellite imagery
Just watching a BBC News interview with David Mearns (Blue Water Recoveries Ltd), expert in marine recovery. He was describing where the search may be directed now, assuming drift, and comparisons with the locations of the Australian and Chinese imagery. Also using current information to work backwards to calculate a predicted area for any original ditching.
When asked that all this assumes the material photographed is positively identified as part(s) of MH370, he implied the Australians and Chinese would not be chasing things likely to have another obvious origin.