When a download is interrupted, it will pop up an error and perform the 'skip' action, but sometimes I want to retry the download because an network problems. Sometimes due to network problems, I see a corrupted package be saved after incomplete downloads, it will lead to the "ERROR : Unable to install" error when use it, until I manually delete the file from file manager. This may also apply to CLI version.
"Me too" Sometimes either the server or the GUI version itself becomes incredibly slow, so download takes 15-30 minutes. In this case I usually open new instance of GUI version and start new bisection. My suggestion for GUI version is to implement "Retry" button in current item in "Bisection progress" (also I think that some buttons, e.g. "Retry", could be moved to the pane "Bisection informations")