Quest chains / challenge quests with legendary rewards

Hey guys,

some of the quests I enjoyed most were the challenge quests that become more difficult each time and also the long quest lines like 12 Kingdoms and Athens quest chain with a legendary + lots of coin at the end.

Having more of those would add more for everyone to do and would be a great place to introduce new items.
Maybe we could add another layer or two of difficulty to existing challenge quest chains and introduce new ones.

Most quests reward random chests.
How about we increase the amount of quests that offer a range of items to select from.
Also I would appreciate more quests that reward expensive recipes and advisors, wouldn't that be a great starting point for new quests?

Extend the quests!