I don't mind the lack of any extreme violence because that's something I see as pointless in shows like these. I guess my major gripe is that his view of Sentai is too idealized. It's not like I want children to be in shock for the rest of their young lives, nor do I ever want Sentai to become some super gritty realistic drama, but I don't see anything wrong with death. If handled correctly I think it can inspire people, and I've seen Sentai do it before, maybe not in Hurricanger though.
By the time you're 8, I think you should at least have a vague idea about the concept of death, and I do think Sentai could be a great way to teach it to kids because it can be idealistic about certain aspects of death and slowly start kids on the track of knowing that it's a natural part of life, but like I said, my major gripe is when it becomes too idealistic about everything.
Avoiding death and just making it an idealized world sort of seems to me what a lot of soccer moms in the U.S. love to do. I understand how screwed up of a place this world is and don't want every facet of it to invade Sentai, but there are times when I think the show could stand to do with some exception. And like Takumi said, Kamen Rider is a show aimed at relatively the same age group, yet they've got no problem with killing off a multitude of main characters. I don't know, maybe that's because Kamen Rider prides itself in being more "realistic".