Marketing Emails / Lists / Workflows / Sales Tools - Folders

I have about 60-70 templates in a folder called “Callahan Templates” and it takes a while for me to find the one that I want. I think it would be a huge help in organizing and would increase our efficiency if we were able to create subfolders in templates. For example, in the “Callahan Templates” folder, I could have “Follow-ups”, “Event Templates”, etc.