We are aware of the issue with the badge emails resending to everyone, we apologise for the inconvenience - learn more here.
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...
+1
very needed feature for people using Dropbox inside IOS (that is, not from a PC nor a Mac, but just from an IPad).