I agree that the best course of action would be to keep Senzel in CF. As mth123 said, within a few weeks he will be the best defensive CF, and could stick there long term. To me, the short sighted knee jerk reaction would be to move Senzel back to 2B and lose the whole reason he was sent to AAA in the first place: to get more comfortable with CF. Dietrich should be the primary replacement until Scooter returns.
As for the future of 2B, I don’t want to forget Jonathan India. By the middle of 2020, he might be ready to take over 2B.