Why not allow a user specified Phone Number Format in the Customization area

Why not allow a user specified Phone Number Format in the Customization area

If you provide a way for administrators to define a "Phone" format rule within the Customization area, then all muy numbers would display in a consistent manner regardless if they were:
  • Manually entered on the desktop version
  • Keyed into the mobile App
  • Imported from an outside data source
Also - can you provide a "Phone" number format option on the Sheet view.  Currently you offer all the number formats that Excel provides, but being a CRM, having a custom "Phone" format option would be very useful
 
Thanks