When sending your second draft of training out for approval, only send the content that received feedback during the first round. Don't send anything that did not receive criticism the first time, otherwise they may find something they would like to change during the second round. Stake holders love to change things. Without their changes, what would they have contributed? My thinking is that if there was something wrong with it the first time they would have said so. Don't give your SMEs or stake holders an opportunity to simply create more busy work for you.
Leonardo da Vinci said: "Art is never finished, only abandoned." I think this is generally true of training design. There comes a point where the training needs to go out to the field. I'm certain if you got enough people to review your work, there would be something to change everyday. Even once you get beyond spelling and grammar, there are subtleties in the way things are said that could be interpreted differently. You could literally work on training design forever.
