Hello!
When I log in as a member and select 'View Profile' and then 'Upgrade you membership' the list of membership levels includes all levels. The levels that are typically 'hidden' upon registration (for me these are free levels for board members, special project members, staff...) are at the top of the list shaded in gray and cannot be selected. The levels that the individual would actually be able to upgrade to are in black and can be selected.
Ideally, the 'hidden' levels would not be visible here. For paying members to see the non-paying levels may be confusing.
Thanks ~ jen