Code design? Perhaps. But how are you going to inform a model of every sprint meeting, standup, decision, commit, feature, and spec that is part of an existing product? It's no longer a problem of intelligence or correctness, its a problem of context, and I DON'T mean context window. Imagine onboarding your companies best programmer to a new project - even they will have dozens of questions and need at least a week to make productive input to the project. Even then, they are working with a markedly smaller scope of what the whole project is. How is this process translatable to an LLM? I'm not sure.