I really should get into the habit of posting these lists earlier.
Utilising the gift of hindsight aside, here is the second 750pt list that I thought I'd run:
Thor the Thunderer (Bruiser, Wallpwner Big Name, Ironfist, Hvy Armour)
5 Bulls, Ironfists, Crusher, Banner-guy, Lookout gnoblar
9 Gnoblar trappers
So yeah, changes are dropping out the unit of Ironguts (pity too, they were cool) for some leadbelchers and trappers.