World War II is one of the most historically significant and important wars to ever take place. I think it's a little hard to critique a game based solely on its trailer, we don't actually know the finer details of the game and what they're planning to do.
All I know is World War II was a horrific war that resulted in a lot of lives lost and we also can't forget that WWII wasn't just bolt action rifles. The Americans fought with SMG's, primarily the Thompson, M3 and M50 Reising. Then you have grenades, grenade launchers, mines, M18 Recoilless rifle, flamethrowers (M1A1, M2-A1, Ronson) and the trove of advanced tanks and all-terrain vehicles.
From a gaming content perspective, World War II lends itself well to being recreated in a fast-action game environment and Battlefield V is not the first game to explore World War Two. Weapons wise, just purely on the American side there is a tonne of options, then you have the likes of Germany and other countries who brought their own technological might to the battle.
If you're after a basic war, that's World War I and Battlefield 1 did a great job capturing the basic nature of that war, a lot of on-field combat with limited technology assisted battle. But World War II was quite a technologically advanced war, even if it took place during the 40's.
Battlefield V looks to improve upon Battlefield 4, the graphics look fantastic and the gameplay is familiar so existing players can jump right in and not have much of a learning curve. It's an accessible game with a great engine powering it and if you're a fan of Battlefield, then this game will be enjoyable.
RE: Battlefield V announcement trailer: identity crisis?