Can I modify the business object's field names in the BO Mapper to camel case notation instead of all lower case?

The casing is brought in matching the schema.  So in order to do this, you would just need to let the partial class be built normally, then you would have to open the designer file, make the change that you want, then copy that change into the Custom Code section of the field in the BO Mapper.  The downside is that you would have to do this for every property and if you were to add a new field or change an existing field name, you would have to remember to go in and make that change manually.

Would be nice if the BO mapper would allow editing of the field name property (case wise that is).

This has been discussed in many other threads....but it becomes more complicated that just changing the column name as a whole.  This has been on the list of potential enhancements for a very long time, but there are other complications that would have to be accounted for before we can make a global change.