Additional customer fields: They are in the progress of working on this currently. YES - see my screenshot below
I definitely think we need to see the client and / or business name when editing additional fields. this needs to be BIG/BOLD/RED for quick visual reference located at the TOP
I also think we need the following:
Contact 1 Name, Phone, Ext, email, Password, and maybe even address if they work in a different location than home office

(such as clients like PhycoTech or JD Restaurants if we need additional locations)
Contact 2 , etc agreed ! needs a 3rd TAB to input up to 20 employee/contacts/locations.. for our business clients with multiple Satellite offices.
I would say the option for up to 20 for large companies.