How about hooking Eggplant up to Apple’s Interface Builder?
With the combination of SenseTalk and a user interface, you have HyperCard for Mac OS X.
In a testing environment, you then have a tool like National Instrument’s LabView, that can control anything anywhere, even LabView itself. Use it to control Echelon’s LONWorks, and control buildings, utilities, and transportation networks.
When running Eggplant on G5’s, you also have the most powerful development platform made. When those machines control grids of G5’s, well the mind just boggles.