Weapon Attachments? Seriously!?

The idea of a game having to "Evolve" doesn't mean just copying what everyone else is doing. Making wallbouncing tighter timing window or harder to do, more movement options, etc. sure, absolutely nothing wrong with that, but turning Gears of War into Gears of Duty, what next? Killstreaks? When at any point has taking a game that was known for being a certain way for more than a decade actually worked, look at Halo, it had millions of players, they changed how the game fundamentally worked and it died, why would it work for Gears?