I was still able to play how I usually do. I couldn't say theres mutual team work. In mods like TFC or FLF there are duties taken upon everybody and nobody really asks for them, the positions are just taken. I was surprised to see how some people play. The only defense I noticed were the snipers hidden amongst the buildings.
People just seem to hope to get the sniper position and fire away.
Now I haven't tried the sniper class. I've just played the class Assault Infantry. I feel DOD achieves total realistic game play. You don't die with one shot, except the old sniper shot to the head. I can say this.