I would like to see support for using a choices.xml for package installation. This could be in the form of having to upload a choices.xml in Casper Admin, manually inputting the fields in the policy, or even have JSS/Casper Admin dynamically evaluate the .pkg file to determine what choices are possible. Then when defining the policy in JSS the administrator could select the proper choices.xml or choice selections to apply for a particular package.
This would be very useful for things like MS Office installs where many of us do not want the package to modify the dock as it does by default. There are of course many other packages where this would be useful.