Need a skip option for the fun quests if it's not possible to complete them or a timeout after, say, an hour (if you haven't finished it by then, the chances are you will never finish it). Some of them do not time out, so if you get a bugged quest you are basically screwed. Particularly if you have no rubies to use the "complete instantly" option. The timer says basic rewards if completed in 9999 seconds, which is 2 hours 45 minutes, give or take. I had a stuck quest that went well over that, and as it was early on in my questing I was forced to pay if I wanted to be able to complete the rest of the daily quests.