Allow an application to install interacively IF a user is logged on; otherwise install without interaction
Currently, in order to allow an application to have interaction, you need to select the option to install "Only when a user is logged on". It would be better if it allowed interaction if the user is logged on, but install without interaction if NO user is logged on. When running an MSI with /qb, you want interaction because the installer may need to prompt the user to close an application. However, if no user is logged on then it doesn't matter and interaction is not necessary.