I have a Collection full of content. Is there a way to rename it?
No, Not at this time.
The collection name is hard-coded into the database when the collection is created. It could be changed in the database, but this is seriously frowned upon as making changes within the raw database could potentially lead to serious data corruption. With all that being said, the Collection name is only saved once in the database and referenced from there, so theoretically it could be changed... but make sure you have a backup of DB before attempting. YOU have been warned.... sorry.
Thanks for the notes. I'll stay out of the DB, not worth it for the risk :/