If you're asking in-particular about the Carbine's reticule, I don't think I have a stance on that. The one we have right now is a bit sketchy with that green cast, and I'd prefer something along the lines of Reach's Needle Rifle.Let me ask you this would you be opposed to simply changing the riticle of guns and not affecting gameplay, an example would be changing the current Covey Carbine riticle to the old H3/2 style?
But let's be honest - reticules are attachments that don't effectively do anything in Halo. They're just to help with target aquisition at a distance. They don't even change the gun itself, and recoil is practically nonexistent. Call of Duty's sights generally alter centerspeed, and scale recoil based on magnification. Not to mention that aiming is almost essential in COD, so finding where your most likely combat scenario will be is a preemtive loadout decision. Halo's reticules are generally well-designed to fit the characteristics of the gun you're using.