Give the ability to select pre-build groups
Instead of picking an image file that has tasks assigned to it, give the ability to create Build Groups where you select the image and applications to be installed. Right now its static, if you want to use the same image but different programs you have to duplicate the image and assign a different set of applications tasks to it. This takes away from usable drive space. It would be easier to build the deployment groups that calls a certain image and application groups.
James Dolph commented
Please refer to this improvement idea.