I'm A Banana
Potassium-Rich
Taking inspiration from Dragonlance for Tyranny of Dragons, Tomb of Elemental Evil for Princes of Evil, and Raveloft (I6) for Curse of Strahd were savvy, smart moves by the D&D team. So is the possibility of adapting the Tomb of Horrors for 5E and set in the Forgotten Realms.
I agree with all this. However, all those plot lines are weaker tied to the Realms than they otherwise could be free of it. Hell, Curse of Strahd has been the most fun so far for me, and there's, like, one plot hook that involves FR and the rest is totally unconcerned with it.
There is also a big difference between "inspiration" and "literally the same thing." Having played through both in 5e now, the War of the Lance and Tyranny of Dragons are both very different kinds of games, despite the similarity of their antagonist, for instance.
It could be less original, since previous adventure paths, if they used those old storylines, used them as the starting point for what could be in the Realms. If WotC wants to have a Realms story with an ancient dungeon ruled by a lich, hey hey hooray! (Though, you know, possibly weaker than if they went with a more realms-specific plotline...but I'm sure there's a lot of Realms-specific liches of ancient power, too *cough*Thay*cough). If they want to literally teleport the Tomb of Horrors into Faerun...eh...kind of lame.While not "original" in the sense of a completely new storyline (and certainly not a "rip-off"), it isn't any less original than the previous adventure paths, which were all high quality and well received, and dare I say it, fun!
To create something new based on a classic storyline set in D&D's most popular setting (by leagues) is smooth moves by WotC and is hitting all of my buttons, and helping to make "D&D Next" the most popular and successful D&D edition yet.
Dragonlance fans, Ravenloft fans, Greyhawk fans . . . adapting adventures set in your favorite worlds to the Realms isn't taking anything away from you, the sour grapes are beyond tiresome. All of those classic settings are awesome, but we are very unlikely to ever see them featured in print again (at least not in pure form) simply because YOUR SETTING ISN'T POPULAR ENOUGH. Sad perhaps, but true. Enjoy the revivals for what they are, bringing something cool from classic settings and storylines into the current edition. It's a good thing.
You're misreading the criticism. I want whatever setting WotC deems worth doing to be done well. That means having its own identity, making it different not just from other D&D worlds but from the vast oceans of generic fantasy that fill the media landscape these days. That includes FR. I want FR to be done well. I want more things like Storm King's Thunder, which uses the particularly FR-centric giant/dragon lore as a launching point (to a large degree, Tyranny of Dragons does that too, though less stridently). I'd take more things like Curse of Strahd where you can make an FR character pulled in through a portal. Distant third on that list are "genericized" adventures that maybe pull some themes from old adventures and blend them with FR stuff.
Off the list for me are hackneyed crossovers.
Even if they do an OK job justifying it, it makes sense in the lore, all that...it's still a crossover, and this, inherently, makes it kind of lame.
Hell, look at Mordenkainen's cameo in Curse of Strahd. Fairly well justified, makes sense in the lore, all that. But still, pretty lame that one of the greatest wizards his world had ever known got a bump on the noggin from a mid-level vampire and went all Comedy Amnesia.
And that's the criticism: I don't want lame hackey adventure material.
Even a good crossover is fighting an uphill battle against the feeling of your dad showing up at your dorm with a twelve pack of Budweiser and saying, "Hey, kids, let's listen to some Whitesnake and get wasted, el oh el!"