Soooooooo...where are the attenuverters? Yeah, I know...attenuators and the like are dull and boring and they've not got all the blinky lights and crap, but try using the "big stuff" without them and you'll discover the exercise in frustration that's waiting for you here.
-- Lugia

To be fair, Maths can serve as attenuverters, though you then get into the whole "but now you can't use all the neat functions Maths can do" argument. I always recommend the Happy Nerding 3xMIA for any and all racks regardless of size. Such a handy module.
Warm Star's The Bends is also a handy but overlooked module for CV controlled attenuverting and matrix mixing.