http://askmastereraqus.tumblr.com/post/30677254241/also-just-a-tad-bit-spoilery-more-under-the-cut Then again, I should have seen this coming...
Well, you know, that COULD explain why Xehanort and Vanitas were able tp keep tabs on them so easily In fact, it starts to make Xehanort's plan seem a lot less like dumb luck
Which part exactly seems like dumb luck? Xehanort tells Terra where to go, so logically he would know where he is when it's important. Vanitas and Ventus are linked and stuff, Vanitas can probably tell where he is anytime, and even then he was following Terra and Vanitas knows that, because he's the one who made him follow Terra on the first place, so it wouldn't be hard to find him with Xehanort pulling Terra's strings. Vanitas found Aqua because he knew she was following Ventus and Terra.
The dumb luck of BBS is every single thing that could have gone wrong with Xehanort's plan, but it didn't if even ONE of the trio had listened to the other at any point in the story, his plan would have failed. If even ONE of them had went to visit Eraqus, it would have failed. If one of Xehanort's lies had been discovered, it would have failed. If Vanitas hadn't been stopped by Mickey before killing Ventus, his plan would have failed. If Terra or Ventus hadn't shown up at the kryblade graveyard, it would have failed if Terra had fought Vanitas, or Ventus had fought Xehanort, it would have failed If Eraqus had explained things, it would have failed If Aqua had explained things, it would have failed If Terra had explained things, it would have failed If Braig or Maleficent had been discovered, it would have failed If Aqua hadn't sacrificed herself, his later plans would have failed too If Yen Sid didn't give bad advice, it would have failed If Eraqus had decided to pass Terra anyways, or failed Aqua as well as Terra, it would have failed Sooo much of Xehanort's plan only succeeded because the writers said so
All your other points are right. Except this one. Xehanort wanted Terranort to get sucked into the Realm of Darkness(Trinity Reports say that). But yeah, no one can deny the series is pretty convoluted right now. Only post-KH3 can fix that with a new saga.
The problem is.. Xehanort already knew everything (or most) would work itself out, as he has SEEN THE FUTURE >_<! I guess Aqua screwed up a bit of his plans.. but other than that all things gone just as planned.
...I was talking about keeping a tab on them. He didn't need luck to make them go where he wanted. But now: Xehanort made it so that Terra would never find Vanitas(As in made Vanitas avoid him) and would continue his journey, increasing his darkness. Xehanort knew Eraqus was ignorant as hell about how things worked, and would NEVER let Terra pass because DARKNESS, or hesitate to kill Ven because DARKNESS or aknowledge Xehanort was evil even after he SHOT HIS DARKNESS IN HIS FACE. Vanitas would use Aqua instead of Ven if he was dead. Xehanort really didn't account for Vanitas disobeying though. Ven confronting Xehanort was part of his plan, it happened, Xehanort made him collapse and sent him to LoD. Terra and Ven would show up on Graveyard regardless, Xehanort had just killed what Terra considered his dad, and Ven wanted Aqua and Terra to kill him or at least stop Vanitas from killing them. Aqua spilling out that she was a stalker made Terra and Ven run away in disgust, it would be worse if she explained if anything, but they didn't meet again after that anyway. Terra couldn't explain things, it would put Ven in danger and MX told him not to. A-Okay with Aqua, but she found out about Vanitas alone anyways. Aqua's sacrifice didn't change much, if anything it helped Xehanort; They weren't to return to LoD until things were taken care of, Terra couldn't stop because of Vanitas and the Unversed, Ven because he wouldn't be able to chase Terra afterwards and Aqua because she was chasing Terra in the first place. Yen Sid didn't give any bad advice that I recall, he told Terra Unversed were probably connected to MX, to Aqua that Eraqus was gone and to Ven that Mickey needed urgent help, I don't see anything wrong with those, they backfired 2 out of 3 times, but it wasn't bad advice. And Braig or Maleficent discovered? Explain