Pretty self-explainitory. Here's mine:
1. Another Oz arc
2. An Aladdin arc
3. Rumple's mom
4. Rumple getting new powers if it doesn't happen soon.
5. A Black Fairy arc
6. an arc that involves going to the futue.
7. Zelena staying as a regular.
8. Merlin's ressurection if it doesn't happen later.
9. Something NOT Disney exclusive.