A queue would be fantastic. This is how the Cydia jailbreak store/directory/catalog worked for the iPhone and was really useful. You view the details of your applications, reviewing the update log (if there is one!) and select an option to add it to a queue if you so desired. Once you finished reviewing any updates you could then select to download and install the queue. This also worked with new applications you wanted to install. Everything could be queued up and installed at one time.