Generally you're going to keep your base images in SCCM limited to software that's only infrequently updated. Otherwise somebody has to update the entire image

Generally you're going to keep your base images in SCCM limited to software that's only infrequently updated. Otherwise somebody has to update the entire image every time an update gets pushed out. Instead, you package them up and deploy the apps on top of the base image at install time. It takes a little longer to deploy, but it takes less admin time to manage since the actual installs are automated anyway.