Yep, don't agree with the "magic fountains are so done" thing either. All it needs is a new twist. Besides, even if magic fountains and chess puzzles are old hat for you and I, they're new for some people out there - I notice that one turned up in a Harry Potter book, for instance. Here's a thought to chew on - most of D&D's strengths are cliches.
May as well say that Fedex Quests are done, or Plot Tokens are done, and they're staples of CRPGs that keep people engaged still. It's not like paper and pencil D&D can look down it's nose at such devices, because it's hardly a paragon of good design - empty rooms in published modules, and room after room of naught but melee is testament to that.