I've loved DragonVale for its short, mid, and long term goals so I started thinking about (for lack of a better word), super long term goals. Goals that take on the order of years to complete. Here's my list and thoughts. Any other ideas?
Collect All Bonus Habitats (I have 25 to go for 47,500 gems.)
Level to 20/21 at least one of every dragon type: regular, twin, rift, rift twin;
Collect all Twin, Rift, and Rift Twin Dragons and Pedestals (I've 4, 63, 119 dragons and 360, 84, 182 pedestals left respectively)
Complete Ts'aishen (Around 11/26/2024)
Collect all 36 of every Island Theme. (I have only 27 to go but I have collected at least 34 of each! :)
Clear all Rift Miasmic Ether (I have 41 left at 22,026,250 etherium)
Feed All Dragons in the rift to level 20 (Hmm... or put 375 Corrupticons in the rift for higher collection rate?)
Collect All traits for Rift Dragons via Transfiguration Tower (Purple fire)
Obtain Dragonarium Red Fire
Obtain Dragonarium Blue Fire
Obtain Dragonarium Purple Fire (arguably unattainable given the number of new unavailable-in-the-rift dragons every event and their lack of returning as available over several months if not the next year.)
...
So end my thoughts for the day. :-)