This. There is no clean application of comparative advantage here. The great individual that will rewrite the code and knows all the details to get the model sc

This. There is no clean application of comparative advantage here. The great individual that will rewrite the code and knows all the details to get the model scalable, robust and production ready, can also do the data science "creative" work. If you are not willing to grow to become that person you are only damaging yourself long term. And if you don't attribute that individual's work: a) this is unethical b) they will, and should leave. P.S. Seen this firsthand and second hand.