I have a few really good ideas about Cider, so I'm going to list them here, in no particular order;
1. Basic Cider: Basic Cider would be brewed with normal Apples, similar to Rum. It would have both an alcoholic and non-alchoholic version.
2. Cider+: Cider+ would be like normal Cider, but would be made with Golden Apples, and have a regen effect, and stronger buffs.
3. Cider++: Cider++ would be like Cider+ but would be make with the new Golden Apples made from blocks, not nuggets (In the latest snapshot).
4. For more advanced techniques, adding raw Gold Nuggets, Ingots and Blocks should affect the potency of the Cider
5. Not sure about the effects, but they should be all positive on the Cider++, and ALWAYS should have better effects than eating plain.