Perhaps the point which is the easist to implement is:
"Unlike the transporter, magic items don't seem to break or stop working very often."
This strikes me as the best place to address this! No item should be 100% reliable. There should be cavets to their use, costs and unforseen consequences. How many magic items in folklore were bug-free or 100% safe? Go to Comment
This is a great complication to add to one's NPCs. As long as there has been stuff to mess with one's head, there have been those who imbibe in it. While a mature theme, it is essential if you want to have a 'realistic' world. Go to Comment
A revolt or attack happens against a strong city/kingdom. All the losers of the battle that can be captured are brutally crucified along the roads that enter the kingdom to show their strength and as a demonstration of what happens to their enemies. ... a long road, decorated with hundreds of dying crucified soldiers... You see them bleeding, you hear them screaming and whispering for help. Do you really want to enter this reportedly peaceful kingdom?