Hey Taylor,
You can set up a folder structure in Design Studio that will lessen the barriers. If your emails aren't in the Design Studio, I would clone them and set up the folder structure however you want.
You would need to create the first folder under directly under "Emails". Then, organize your emails in whatever manner you choose with additional folders.
In Design Studio, the folders would look like this:
Emails
-----MSI Emails
----------Case Studies
----------Call to Action
----------Meeting Request
In MSI:
MSI Emails
----Case Studies
----Call to Action
----Meeting Request
This way, at most they would only have to open two folders. Or, if you want only one folder, place all emails in the "MSI Emails" folder.
Hope that helps!