The question to be asked is what is the issue with submarines - I feel like the FC/Non-FC content arguement is more a strawman. The question is - whats wrong with submarines? If the issue is that subFC's are eating housing; thats the problem my suggestion aims to solve. If the issue is a persons own personal access to submarines; that's another discussion.

The solution offered essentially minimizes the changes needed as even running subs can be managed by FC permissions.