For 5e, how do you want your fantasy?
When I got into L5R with 1e, there was a strong mythic element to the setting. The kami were a solid foundation of the setting, and in the very first adventure in the book, one of the gods themselves shows up to see the PCs in disguise. As you go through the adventures you encounter mythical creatures, one of the Oracles, oni, undead, and strange creatures from inside and outside of Rokugan. The game setting itself has a strong mythic feel to it and the samurai themselves progress from 'normal people' to iconic and archetypal heroes after a fashion - the techniques and abilities they use making them less than human. (If they survive)
In my campaign, the PCs had to face shuten doji - a possessing spirit that could transform entire armies into a hive mind. A PC dissolved into a pool of shadow when they gave themselves up to the Lying Darkness. One PC died when Fu Leng ripped out of his torso and was made manifest for the Day of Thunder. One PC faced herself because of the Egg of Pan'Ku, and another held the bloodsword Passion . Heck, one married a literal phoenix from the spirit world, giving it a tangible anchor to the physical realm and granted it mortality.
I like my Rokugan with bright colours, and the feeling of myth. Later editions seemed to kind of grind it down closer to reality.
Where do you want your 5e?