Pretty much the same packages to deploy applications in SCCM can be used in Workspace One, VMware provides a migration tool, https://code.vmware.com/samples/2681/windows---sccm-app-migration-tool This would allow you to expand your user base. Support to run your tool to sync application install packages would be awesome. There is an API available to use as well.
If required there is a comprehensive sample how to add applications to WS1 using the API: https://code.vmware.com/samples/2681/windows---sccm-app-migration-tool?h=AirWatch#code
totally agree, think almost every existing Intune function/logic will work the same (when to install, how to install, when to call completed) this it „just“ need to be translated to Workspace One.
this would be awesome