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Uploading the zipped file to dropbox and unzipping it inside would save a lot of time and traffic for users. Some of the web services already exist for that (like this one http://www.quora.com/Is-the...
I agree.
I have the same request. I'm currently shifting the photo library to DB from GPhotos, and the Google buggy export tool creates several 2.15 Gb archives into the Dropbox folder. I've activated Selective Sync to exclude them from my desktop client (more than 80 Gb), and it would be really handy to decompress them directly into DB rather than download one, unzip and re-upload.