Having guns we worked hard to acquire stay relevant is quite reasonable to ask, what I think is crazy is the notion that a DLC should make anything that came before it irrelevant. It hurts nothing to let us upgrade the old ones to be just as good as the new, and it helps to add variety and keep things interesting for everyone. The people who found something they like and never want to use anything else don't have to, the people who want to use all the shiny new toys can do that too... I fail to see the problem.