Without wanting to comment on the specifics of any of the cases mentioned, some factors need to be considered:[list=1][*]Your position inn the sequence is dependant on more than just the one aircraft immediately preceding you.[*]Departure order is dependant on more than just who is ready and at the holding point first.[*]At any location, there is a better than even chance that you will be following an aircraft belonging to the local/national carrier.[*]The easiest way for ATC to sequence traffic is to follow the 'natural' sequence. Anything else is just too much work.[*]Formal complaints may achieve results. A carton of beer is quicker and more effective.
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