Assassin's creed like game set in WWI

Recently I have noticed that WWI has been used more and more in different stuff. Battlefield 1 was set in WWI and the new Wonder Woman movie takes place in WWI. Usually we always see stories set in WWII but I really like the change of setting that battlefield and Wonder Woman took. I love learning about history and different events so getting all this content is a lot of fun.

So I was playing AC Syndicate and I got to the part where you get to go to WWI London and I thought man an espionage game set in WWI would be awesome. sort of like a tactical action game. Like metal gear and Assassin's creed put together. You would play as a spy that has to go around taking out other spies, infiltrating areas, and gathering intel. It would be cool to if the game has various settings (cities) that are like open worlds you can go to for missions. you could even have different specialized team mates and contacts that can help you out in bigger missions like the heists in GTA V.

I don't know just a fun idea. What do you guys think? would you like a game like this in WWI, and if you do what do you think would be a cool new game play mechanic?

note: this battlefield 1 concept art