There are other ways to automate workflow that don't require the tool to do everything for you. IMHO, limiting yourself to what Photoshop can do is a trap, eg "export for web" which doesn't come close to generating production-ready assets. Given a need for workflow automation that's external to the editor, I feel it makes more sense to compose a workflow from tools that follow a less monolithic, more unix-y "do one thing well", kind of approach. But use cases abound. YMMV.