What considerations do you take in adding a new transformer?

The questions were very challenging compared to what I am normally used to when it comes to interview questions. However, knowing what others here have advised, I gathered all possible behavioral-based questions on the internet and tailored it to my career experience. Everything I prepared for in advance got asked in the interview, therefore, no surprises (again, depends how determined you are during the preparation process so that you do not encounter any unexpected questions). I do not recall the exact questions but if not most, all of their questions will determine how you approach every situation, what the tasks were, actions you took and the outcome/results.