What features of DC have been discontinued but you wished would make a reappearance?
For me it is:
Sanctuary - new levels and breeding combos added
Tomato Tree - I still regret not getting this when I had the chance
Breeding Nest - I wish it was offered to veteran players
Repeat Events - I missed the days when an event was offered more than once, giving you a chance to get the dragons you missed.
Dragon Card Packs - the chance to earn tickets to "purchase" card packs. And the original rewards in the packs instead of these ridiculous amounts in the purchase packs.
School Calendar Freebies - I miss these, the prizes were a joke but the free dragons were a nice bonus
Facebook Freebies - it is not in the game but I wish SP was still giving us the food freebies every Tuesday