Both a suggestion and an inquiry. Music and Sounds. Some nice ones, too. I know there probably isn't a lot of pre-Columbian style music around, but even some minor things like sounds for structures upgrading, maybe horn/alert sounds for when there are Enemy troops incoming spotted by your watch tower, etc.
Or let's say you open up a Battle Report that says you Won, it can play a small celebratory cheer sound, yes?
Just some thoughts from Fur.