A few months in and we are still lacking a way to do a friendly (for fun) duel that has no army loss. No need for me to go too deep into why nobody is willing to duel, or how many servers are a one faction show.. This is simply something extra for players to do where they can rev up their army that they work so hard to build without facing major losses. It would be a fun addition to the game, and I am quite certain that players would spend hours challenging each other. On top of that, the infrastructure is essentially already in the game to allow for friendly duels. A simple menu toggle for whether or not you are accepting friendly challenges would suffice.
Devs - A large portion of your servers have virtually no PVP content to be had due to age and reduced population. Give your players a recreational activity to fill the gaps between quests and the void.