OMG Battle Kat, you kick @ss! I love this - only a few days after the discussion started and this thing seems to be getting off the ground!
Everything you mentioned is awesome, only one thing I would like to mention;
You mentioned the field hospital is beyond the scope of the game, but in really large scenarios, I can imagine one on the map. would be similar in stats to a regimental hospital (main dressing station), but with a larger negative point value. Also, perhaps these division-level hospitals should be unmovable (like some supply depots), unlike the (barely) movable dressing stations.
Oh, also the ambulance should probably be flagged to carry infantry-class units only, and should probably be limited in max. strength points (two? three?) to represent that it would only be ferrying shot-up units.
Awesome post Battle Kat. Just made my day!