Not a bad point, but regular strikes drop plenty. Especially when juggler isn't on. I just don't see the cost being that much of a factor. Usually, I'll mop of the trash mobs before entering darkness zones on Nightfalls for the free heavy ammo. On strikes though, it's hardly necessary. If you're running every strike and slinging rockets at every mob in the darkness zones increase kill speed, then yeah I see that as waste of ammo on anything prior. Thanks for commenting though.