OK, back from vacation and had a chance to work on this a little bit.
I've added pw's requests. You can now print out a "Stats+List" and "Special Rules Used". The first is the stat's block plus a number of units and costs columns. The second is exactly what it sounds like, the special rules for only the units in your list.
Again, the special rules stuff is Empire only at the moment, Ill work on the JSON for the rest of them as I have time.
What other requests are outstanding? Magic items for the print out and WMA army lists?