Would love to see some plants. Flowering vines on the sides of houses. Window boxes filled with flowers, large flowering bushes.
Oh...wait. I was talking about *my* house.
'> They would still look great in NWN.
A selection of moderately tall impassable thickets would be great. For subtly limited access to tileset edges, snarled, thorny -- DON'T TOUCH IT, IT'S POISONOUS! -- thickets would work well, and would allow for something other then water, walls, pits, cliffs, and the so called "tree" tiles to constrain access. After spending many, many days walking in overgrown areas, I'd love to see something similar in NWN.