Well MAME32 is based off MAME which has a CLI (Command-line interface). So It can be easily used in GameEx. Now DaphneLoader is a frontend itself and wasn't designed to work with a CLI. A wrapper can be made to accomplish this pretty easily by many of our talented scripters but hasn't been done since Daphne itself has a CLI and what is used in GameEx. So not much call for writing something for it when it is already CLI friendly for GameEx to run. Daphne is an easy to use emulator IMO from using DaphneLoader to generate the command-line needed for GameEx to run in. But it can be done just hasn't really a need or much call for it.