I agree that it is way too soon to make conclusions on Bohm, though I may be ready to do that about his defense. There is a reason there are not that many 6'5" 3B in history and I just don't think he can stay there athletically.
Now there still could be a really good bat buried in there, but unless there is much more power coming it is very possible the combo of plus offense (850 OPS) with minus defense is really only an average player.