Collect the things you know that will almost never appear in the show (MLP FiM) despite many fans still want them, and post them here.
By far, I've collected:
Dark themes, blood, gore and other violent stuff (guys have you even noticed the show age rating? However some episodes did have a small bit of violence and a bit of dark themes)
OCs appearing in the show (by far at least OC has appeared in the show, but it was an OC of... umm, a maker?)
NSFW stuff (never never never!)