Aiming for 100% transparency is just another fence between you and the students. I watched a teacher once who was aiming for much more transparency than I had been. As I watched her it felt annoying. She wrote everything on the board when I just wanted to know what came next.
I realized we lose kids not by asking them to lean into the language and tolerate some noise, but by making a fun experience (hearing a new story or creating a new story together) into a drab school-like exercise in vocab. and language, not an enjoyable, effortless experience of hearing a good tale.