There is a very clear point in codebase size where LLMs tend to falter without very clear written down overview descriptions of the system structure. I have a hard time seeing that this system would be immune to that.

i have encountered LLMs seeminly knowing more about a system than it should because there are many similar in its training set; but that just lead me to be extra sceptical when it pulls up functions that dont exist. (Ive fought LLMs about json libraries quite a bit)