Here's another vote for an axe of some sort.

Preferably in SR77.

Or, to run a bit on the crazy side, I've had a hankering for a cleaver recently.

8" blade, 4" wide, 1/8" thick, convex grind, Mudder handle.
As a tool intended for chopping, Scrapyard steel and heat treat are already ideal.
Not that it can't be used for everything else too, thin stock would be better for when you're cutting vegetables (and make the price more reasonable).