We have a need to be able to set custom image for folder. Our use case: - there are several flash drives - we want to upload content of each one to separate folder on Dropbox to get rid of this bunch of drives - we need to quickly identify what flash drive a Dropbox folder corresponds to
The best way is to have a photo of a flash drive as the folder thumbnail. Right now we put photos inside folders, but obviously it's not convenient.
I suppose to support custom thumbnails in the web UI is pretty simple. But I also think it's not a problem for Windows since you already draw custom overlay images over folders and files (green mark, blue sync mark and so on). So I think there is API in Windows too.