I am not sure this approach can take you very far.
In my experience, CC makes it very very easy to _add_ things, resulting in much more code / features.
CC can obviously read/understand a codebase much faster than we do, but this also has a limit (how much context we can feed into it) - I think your approch is in essence a bet that future models' ability to read/understand code (size of context) improves as fast or faster than the current models' ability to create new code.
In my experience, CC makes it very very easy to _add_ things, resulting in much more code / features.
CC can obviously read/understand a codebase much faster than we do, but this also has a limit (how much context we can feed into it) - I think your approch is in essence a bet that future models' ability to read/understand code (size of context) improves as fast or faster than the current models' ability to create new code.