I like both sets. Croplands would be nice and could justify additional mission requirements--for instance, don't set the farm on fire (so, go easy on the LINE, BLAST, and BURN weaponry; maybe avoid skimming as the arc jets wouldn't do the field any good, etc).
Could guess at symbols for ASCII, but probably wouldn't be much help. I try not to play ASCII because I'd rather not have to figure out what each glyph means or have issues like the NetHack purple h problem. For something as complex as Gearhead, I'm aware that people play it without graphics, but I'm not at all sure I'd like to try.