Based on http://lists.wikimedia.org/pipermail/glamtools/2014-June/000205.html I would say GWToolset should do better about communicating sucess/failure to users.
I would sugest adding an echo notification to the user when all uploads complete succesfully. Additionally (and perhaps more importantly), there should be an echo notification if there's an issue with the XML file half way through causing uploads to stop (Ideally saying which file it was at when the error happened)
Version: unspecified
Severity: enhancement