Do you consider the Hoard of the dragon queen or Princes of the apocalypse to be remakes?
Sort of.
ToD has significant trappings in common with Dragonlance: a plot to free Tiamat from the Abyss; five enemy leaders each themed on a colour of dragon; an agreement that the good dragons won't get involved; a flying castle; an undead villain who is working with, but not loyal to, the main bad guys; and even a magic crown intended to be given to the overall evil leader in a final ritual the PCs can disrupt. It even has a council of the good guys that is riven by very serious internal bickering! The main thing it's missing are the actual armies.
So it's not a remake as such, but I do think it makes revisiting the original DL series any time soon unlikely.
PotA is very definitely not a remake, but it's also very definitely "inspired by" the original ToEE. That's actually the model I would expect WotC to adopt for most of their 'remakes' anyway, so I'd again be surprised if they revisited the Temple any time soon.
(And that makes sense - different sources call for different approaches. Much like the 4e settings: FR had the timeline advanced and the setting significantly changed; Eberron was left as-is; and Dark Sun was essentially rebooted to a "just after the first novel" point in time.)
edit: actually I'm not sure what the ownership issues are but I would love the three dungeon adventure paths - shackled city, age of worms and savage tide.
The original Dungeon magazine issues ascribed the copyright of the material to WotC. However, there may well have been a clause in the contracts that required Paizo to agree to or be involved in any related projects. I would welcome an update of any of these, for 5e or Pathfinder, but I'd be surprised.