When users try to use mention some one. As they start typing the full name a list will appear that users can choose from. However, if there are some users with the same name, there is no other way to choose the right person for mentions.

It would be good if there are other information on the list so it makes choosing the right user easier.

For example, Jira @mention will display like this [Display Name - Email Address (username]. It would be nice if the same format will apply in Confluence @mention.