I completely disagree with this idea, first off the weapons you listed do vary completely in use lol. You have very little factual evidence apparently. The plasma rifle takes off the shield really quick but is slow to kill the health, while the plasma repeater is efficient at taking down the shield (not as good as plasma rifle) and it also kills quickly once the shield is gone. The DMR has a different reticule expansion than the needle rifle, not to mension the needle rifle has an a needlerplosion added to it if you can only hit body shots. Also that would defeat the purpose to having two sides to the story, covenant and human. What would be the point if the covenant just ran around with ARs and DMRs in invasion??? I like your thinking but to say the weapons have no point is crossing the line. Not to mention COD and Halo are two different games with different gameplay, and blending the two would be absurd. COD is focused around guns and attachments and leveling up to become stronger, while Halo focuses on everyone having an "even playing field", as to say a high rank wont have any advantage weapons wise (besides knowledge) compared to a noob just starting the game.