I'd like to get a conversation started. This is about Art, not Commerce.
What is it about our culture that relegates 2D hand drawn animation to being a storytelling medium for telling candy-coated frivolous subject matter suitable only for children?
Whatever the reason, I suggest that a way to begin changing that attitude is by creating short personal animation pieces containing more serious topics aimed at children in an entertaining manner. These pieces can be shown on the internet. This would be planting seeds that can bear fruit as children mature and come to accept 2D hand drawn animation as a means of expressing themselves as much as using live action video, film, writing, etc.
Anyone with another suggestion?