The Reference fields got a completely new qualifier that will allow you to narrow down the options you get on the dropdown menu when your field References your Team Members.
Now you can apply qualifiers to show Team Members assigned to a specific Role! Within the Qualifier options, you will have all the existing Roles for your Team members or simply select 'Current Role' as the qualifier value, this will update the list of team members available in the dropdown to those that share the same role as the team member that is creating or editing the record, isn't that simply amazing?