I like the idea of crypt-exploring and jumping around. That's why the Obsidian Sanctum (if they'd remove the PvP element) and the crypt in (I believe) Dredgehaunt were the two absolute best parts of GW2 to me and what I feel the game should have imitated throughout. That said, the OTHER jumping puzzles in GW2? Not so good. Both because they felt forced in and because the engine just really wasn't conducive to it (worsened by the actual design of them... If you're a Norn or Charr, you cannot fit on that platform. So rather than making it look reasonable for the puzzle, we'll just let you hover 2 feet away in the air...)

For FFXIV, the movement engine feels so clunky, there's no way it'd work. If they want to revamp it entirely so it feels as tight as, say... Devil May Cry, I'd welcome it though. Then tear down the invisible walls, expand the borders of the zones, and the world will feel a lot less awkward.