When choosing to "Reinstall" an extension with pun_admin_manage_extensions_improved, there is no prompt or confirmation dialog. This is a problem since the reinstall runs the uninstall and then the install, which means if you have an extension that has a lot of info stored in the DB and you accidentally click "Reinstall", you lose ALL of that information.
Clicking "Reinstall" should bring the user to a warning page similar to clicking "Uninstall" to prevent accidental loss of data.