Con:

• (+/-) Wiki creation more hidden (but is a rare action, done only by admins (advanced users) that are familiar to Administration)

Con:

• For normal users, the type area will contain just one item: Workspaces, being a bit redundant
• Duplicated functionality for admins: in the Create step and in the Administration (for the wiki details and users management)

Con:

• Mixing User functionality (the ability to create Workspaces) with Admin functionality (the ability to create Wikis)
• Confusing for users that don't know the difference between Wiki and Workspaces
• Crowding the menu with an option that is rarely used

Con:

• Removing the marketing benefits of having the workspace term
• Emphase on having 'local' and 'global' users which can be confusing for normal users