Hi Bill,
I understand there seems to be something that doesn't meet your request in Outlook 2013, I will see if I can provide some help. Meanwhile I also need you to provide some more information.
By "the ability to display more than the current day appointments", I'm not sure which field in Outlook do you mean, would you please be more specific?
Also, by "the email display back to the Outlook 2010 configuration", do you mean the "View" or something else? If you switch to "View" tab and click "Change View", you will see Compact, Single and Preview, check
if any of them can meet your need.
Regards,
Melon Chen
TechNet Community Su