In my mind, ACR has very little street credit because all the cool people are fighting to stomp on the brand name bushmaster. They should just drop the brand name bushmaster and make everything under the Remington brand.
People value magpul's brand, but they see bushmaster as a K-Mart brand. If they put Magpul's name on the ACR, lots of people probably think 2500 is not a big deal. however, no one is going to pay 2500 bucks for K-Mart branded product even if it is designed by Gucci. Bushmaster mistaken thought that they are the "Target" of the gun world.
They will do 10X better just by changing the brand - they will do 20X better if they ditch that ridiculous M4 profile barrel for a light weight profile like SCAR. They will do 30X if they start simplifying the QD mech and figuring why they need a piston rod guide in the mid section of the barrel.
The dream for a new US carbine is dead - there is no money for it. Even if it happens, I doubt it can beat(and I do not believe it can) HK416, SCAR or the Beretta AR160...or even the GD XM8.