Well, I was going to suprise you

Texture revamp with additonal material support. Ie. sandstone has a proper sandstone texture instead of a coloured generic texture.
Bump-mapping, specular lighting. Improved water. (Shader support required)
Blades of grass (the same way its done in games)
Variable time-of-day sky dome. Clouds will have to wait I think
All the building models that have been posted
New slice tool
New interior view
Smooth interiors (ie random noise is only applied outside)
Advanced screenshot capabalility
Many bug-fixes.
All of this is finished/partially complete and my gf is away next week so I should be able to get a lot done.
EDIT: Oh, and camera clipping, forgot about that.