We've had some confusion with CSMs who have multiple accounts with the same Customer name working the wrong CTAs. The feedback was that it is not clear from the Cockpit which account is which. I went into Cockpit Configuration and tried to edit the List View Field Configuration section to add Account Number to the Cockpit List View, I don't see Account Number as an available option. 

I opened a support case and was told "The 'list view field config' (which is what you would need to add account number to) will only allow for date and number fields. Account number is actually a string field and we have tried a few ways to convert that into a formula number field which SFDC will not let us do."

This is important to be able to allow CSMs to tell accounts apart just at a quick Cockpit glance.