it is very hard to update a single entity from the database and it is very time consuming, particularly if you have a multiple schema owners in oracle. It would be nice to right-click entity in diagram and choose “update from database” option. Also have the ability NOT to update navigation properties while updating from database.

That way we would avoid a very painful process of selecting "update model from database", then waiting, then digging and finding the class we are interested in. The process is even more painful if you have multiple schemas.