I noticed also that you included Wellington's tree (the tree he stood under during the battle), which is a very nice detail that not everyone would notice.
Knowing it should be there I specifically went looking for it. Pleased to see its planted in a fixed position.
What I noticed about the ground north-west of La Haye Sainte is the team have used the correct ORIGINAL 1815 ground contours before the Dutch-Belgian Lion Mount memorial bulldozed so much critical soil off that ridge in the 1820s.
Going down to HITS level its scary how steep and high that ridge is. Wellington sure chose a superb position to hold, it's more obvious in the game than the ground is today.
You can really sense the mountain that Ney's cuirassier charge and the Moyenne Garde had to climb.
EDIT: SoW:WL is probably the finest depiction of the Waterloo battlefield outside of the best academic book - and maybe including the books. It really feels right. I was galloping around Frischermont, Pappelotte and La Haye last night (perhaps the most neglected and least-documented area of this critical battlefield) and I was delighted at the buildings, houses, woods and streams that seem exactly right. I think this area of the field is now my favourite location. It has a mood and atmosphere all its own. It does credit to the brave Nassau brigade that defended it all day.