Why does AI need to be involved in such a migration.
The original game was made by one guy.
Its a small team with a deep understanding of their project, it seems counter intuitive to outsource this to AI.
If changes become cheap, the same benefits don't apply anymore. Large scale refractors can become background tasks. "Turn this project into ECS style" is one session away. The things we valued in long timescales happened because changes and backtracking were painful and a huge time sink.