In trying to research which accounts an access tokens affects, I found that there was no way to do this. In the case of a termed team member we have no idea what might break when we delete their user if they own an access token. My suggestion is to add reporting around Access Tokens, specifically in DomoStats | Accounts. If the Access Token powering each account could be added to the data in that report we could easier find the Accounts that need attention when editing users.