Cruiserdrew
On the way there
I think you're correct.
Someone could put one of the Mark's gearsets from AU in their splitcase for ridiculously low gearing combined with the Toybox.
They could, but totally not needed and silly. Even on difficult trails, I'm in low on the Toybox, and high range in the transfer. THere are very few times your really need the double low.
Still, Toyboxes are great, and I'm glad to hear that Marlin will again offer them. I have enjoyed mine, perhaps more than any other single mod.