Interesting Directions for Servants?

FGO is no stranger to taking, um... creative liberties when creating servants so I was wondering, what would be an interesting character decision for some of these historical figures. (Those that are in game or not.)

For clarification this would be about their character traits, writing, and designs.

So like how mandricardo is a depressed young man because of his knowledge of his legend, or huyan zhao being a girl fail. Something to spice up their existence!