A play mode like SQUAD and HLL?

Do you think a more tactical mode in the style of Warfare like Hell Let Loose with a class system with limited choices could work in Battlefield? (For example in Hell Let Loose you can have only two snipers per team with two scouts, one engineer per squad, one machine gunner per squad etc.) 

I wouldn't push the simulation side as much as Squad or HLL... for example, I would leave the possibility of piloting tanks or aerial vehicles to any player without having to choose a pilot class.

I would be curious to see this system but in a less simulative game like Battlefield.

And my idea is not to remove the conquest and rush mode from the game but just add an additional mode with a different mentality. Although I love Rush and conquest, I find that sometimes playing in matches full of snipers who do not play the objective ruins the game mode.

So, do you think a mode like that would work on Battlefield or is just a bad idea?