Thread:Extension talk:MultiUpload/Does not work with 1.18/reply (3)

You're absolutely right, of course, and there's some more room for improvement. Unfortunately, User:Tderouin (the creator of this extension) hasn't shown up to comment on this page. In fact, unless someone is prepared to take over from him, the extension does not appear to be maintained any longer. I don't know why so many useful extensions are being neglected by the developing community lately, but maybe slapping an Unmaintained tag could help to ignite some interest.