Way, way too early to worry at all about this, but my only concern about Devers moving to DH was that as a professional athlete who very much wants to be on the field at all times, he might find it hard to adjust to only taking at bats (I'm no professional athlete, so take this for what it's worth, but I'd hate only be having at bats) and so I wonder if they have a back up in mind should it develop into an issue. If they do, I imagine it has to be getting him reps at 1st.