This is my dream game, a game that I have thought about ever since I was a kid. I would watch movies like The Lord of the Rings and see these epic fantasy battles and think, wouldn't be cool if a game could recreate those? Most developers do it by having a typical combat system that does not translate to multiplayer so I am stuck mowing down enemy AI grunts and it doesn't feel like I am in a dangerous battle. This is why Assassin's Creed multiplayer doesn't have melee combat in its PvP and it is also why action games like Batman and Devil May Cry can't have PvP multiplayer.
The problem with these games is that they make the player too powerful, enemies cannot stun you and the combat is combo based - it doesn't translate to multiplayer. The only console developer that put the player and enemies on equal footing with a careful combat system was Fromsoftware but their combat is less realistic and more fantastical. On the PC side, I know of Mount and Blade, a low budget game with realistic medieval combat that has clearly inspired this. I am SO happy to see Ubisoft Montreal tackle this issue and I hope it leads to more games like this on consoles because, right now, there is nothing else like it.