I don't know how many lurkers are left (especially after the latest crash) but I had a general question:
Given the formula that WotC seem to have developed for 5E, what you would you suggest if they decide to one day write a planar adventure? I know that they have written a few mega-modules that involve planar creatures arriving on Earth (or Toril, etc.) such as "Out of the Abyss"; but what would make a good plot to get the PCs to leave their worlds and journey to Sigil and/or the rest of the planes?
Would you suggest another master plot by Orcus or Vecna?
Would you suggest a new existential threat (like the Iron Shadow in "Tales from the Infinite Staircase")?
Would you suggest an adventure that was less "end-of-the-world" and more a free-wheeling string of adventures that drop the PCs in a wide number of locations ("The Great Modron March" probably being closest to this idea)?
On the same thread, are there any elements that you would consider a "must-have"? Would you insist that the PCs visit Sigil? Would you demand that they visit at least a couple of elemental planes? Would you insist on an encounter with A'kin or the Lady of Pain?