I honestly do not think that people actually want Kakashi to die, I just think that they want Kishi to follow his own rules that he made up about chakra levels and the MS. Kakashi has used his MS about a good 10 times or more in this fight alone not even including the whole war itself and not only did he not run out of chakra yet, but his MS didn't even loose it's light yet. I like Kakashi a lot as a charcater, but Kishi is abusing his own rules and Kakashi should have been dead a couple of chapters ago.