This Statistic is good, but should be the 3rd level of stats upgrade (and not the 4th level like it is now):
"Reveals how many armies are visible on unconquered territories on the map."
Because this one should be in the 4th:
"Reveals how many armies are present on all unconquered territories on the map whether they are visible or not."
Total # armies on the map shouldn't be a secret. Knowing whether you're dealing with a 5M map (Huruey), 6B map (Feldmere), 140B map (Scandinavia), 420B map (Australia) or 270T map (United States) should be available information. Fog busters are still required to show you what's where on the map, but the # of armies you need to be prepared to generate to clear the level is good to set expectations.
Also another stat that would be useful to see is # Armies captured. Because we now have # Armies earned & # Armies saved by JS, presumably the total is # Armies required to clear the level (with a small gap to account for # of Armies earned but not spent) but it's a useful piece of info - and since we're adding Stats, would be nice to have it.