So what? You build Diggle towers along the minecart path and upgrade them to destroy the pesky human miners before they rob you of your stuff? Can I upgrade to Arch Diggle towers? Will Stone Guardian towers upgrade to Magicky Golems or are we sticking with creatures with the same basic sprite? Can I just get Corruption towers? How would Lutefisk work in this system? Can I get a Dredmor tower?
...still holding out hope for a DF-like... since Bay12 is so very "relaxed" about the DF updates. Wooden Sword + Wooden Sword + Wooden Sword + Wooden Sword, 5 and presto alternately, swap out one or more wooden swords with nailboards