I would like recommendations on how to create a SAFe compliant story hierarchy. I have read through few other questions where there have been suggestions to rename Epic issue to Feature and create higher level issues. 
I have done following changes to facilitate this issue hierarchy:
- Rename standard Epic type to Feature issue type.
- Created a new issue type and named it as Epic. Placed it above Feature type.
These changes helped me created following roadmap, but this comes with few issues:
- As I ended up renaming Epic to feature, throughout my backlog Feature issue type is just treated as epic and this leads to confusion and inconsistency.
- Jira uses Epic link to establish parent child hierarchy between Feature and Stories in my hierarchy. This means it doesn't use the Parent Link.

Bottomline:
- I want to setup my hierarchy as Epic -> Feature -> Stories -> Sub-tasks.
- I have followed the steps mentioned above to get to there but this has resulted in reusing the Epic link to simulate parent child relationship between Features and Stories.
- Epic -> Feature link in the above setup in Advanced Roadmap uses Parent Link.
Summary: Is there better way to do the SAFe hierarchy?