Personal Context: I don't play the singleplayer campaigns in this genre as i think they're boring so I am speaking about what I know more about which is the multiplayer aspect.
To answer your question at the end: Most definitely if your making a War game. I remember back in high school playing hours upon hours of Operation Flashpoint: Cold War Crisis (which in doing research to make sure that was the game I was remembering, I just found out was the "prequel" to ARMA) which I loved devising strategies and constantly re-trying missions to ensure that I could finish it without losing any team mates.
But that doesn't mean I want that in CoD or BF. I play CoD or BF to turn off my brain, I play war \ strategy games to engage my brain. I think they both have their own place in the gaming market.