When creating an update, we right-click, select "New Update", and choose the installer MSI. We then have to edit the Main URL textbox to use the correct URL for the updater.
This manual process is fraught with problems (mis-typed URls and such).
I would like to see a new update project configuration, "Default Main URL" and maybe "Default Mirror URL", with the ability to use Advanced Installer properties, including the ones for the new update entry (like, version number, installer file name, etc...)
You could then set the default download URLs in the project config, setting the download URLs when a new update is created. Users could then automate the URL entry (Something like "http://www.example.com/download/MyInstaller x.y.z.w.msi", having a version number in the URL). Updates could potentially become simply right-click -> select installer -> build project, with no possibility of human error in the download URLs.