But domain experts can handle complexity just fine, especially given right tools to help with domain driven design/DSL , abstracting, versioning, parameterizing

But domain experts can handle complexity just fine, especially given right tools to help with domain driven design/DSL , abstracting, versioning, parameterizing, information hiding, reuse, modularity, and getting help from software engineers when needed). And since there are easy to use examples of each of those in various categories, it's not impossible to imagine some tool will tie all of them together.