Just wanted to show this shot displaying a couple of newly optimized buildings. The ones on the left are the current Wooden House and Storehouse in the game. On the right are the optimized versions, representing a 38% and 53% reduction in tris respectively. Less tris = better performance.
(click to see full size image)
I just finished optimizing the Stone House as well. I want to do a few more of the more common buildings before making a build. These optimizations should help improve performance, especially once you have a large town.