Agreed. There clearly is a decent amount of work put into this but it hasn't been thought through. And I'm not even sure that what is there is well specified; for example, you can have priorities of 1-10 and we are told that 1 is the lowest and 10 is the highest. We are also allowed to instead use the words 'low' 'normal' and 'high' for priority but we are never told how those relate to the numeric priorities (e.g., is '10' higher than 'high'?)