This tool will assist you when mapping Morph's tracks to a joystick and when connecting corrective morphs. It allows you to choose among several behaviours depending on the 'target' position you use, so you can connect your morphs to lineal or square controllers.
If you also want to automate the creation of joystick controllers for your facial rig check this document, written by Rick Stirling, on how to script a tool for that:
http://www.rsart.co.uk/2007/11/25/creating-controller-joysticks-in-maxsc…