With the new weapon category of Finesse Weapons, I wonder if elves would be better served by changing the Elven Weapon Training trait to: "When you attack with a one-handed finesse weapon, a shortbow or a longbow with which you have proficiency..." I believe it would be much more flavorful than the ubiquitous long sword. The weapons in that category are currently the dagger, rapier, scimitar, short sword, and whip.
I have been trying to make a longsword-wielding elf fighter, but the lonsword just does not mesh with the rest. It feels like trying to fit a square peg in a round hole. Even the katana fits better than the longsword.
Just a thought