A "Last name>Maiden Name" button would also be useful, as that's a vast majority of last name changes.

I agree - it would be helpful if this was a feature for FirstName & Surname changes.

I second this suggestion. This applies to first names and nicknames, and last names and aliases. This is what I would propose: in the field comparison window that pops up, put a button to the right of the first name field that says "->Nickname" (and force nickname to always show up on this screen). Also, put a button to the right of the last name field, that says "->Alias", to move the last name to Alias. In the profile configuration, there would be a setting for which Alias type to use.

This would be really helpful!
We receive an excel list of current employees each month. The excel sheet features updated addresses and names. The sheet features their employee id as well. When someone gets married and their name changes, we can see it is the same person because of the employee id. Currently with importomatic we have to manually go in and add the former name to the alias.
This would be a nice option!