My thoughts and questions

I watch Pretty Little Liars every week and I didn't want anything to do with this show. Not sure if I just wasn't interested or if I just didn't want to get hooked on another show like PLL and possibly get no answers like PLL. But with the return of Caleb on PLL I decided to see what had him so "traumatized". So I just finished watching the 10 episodes. It wasn't even that bad. I actually enjoyed it. Although, I do wish they hadn't ruined Caleb and Hanna's relationship. And I do view it as ruined because I liked to believe his relationship with Hanna was very genuine and unbreakable. But how unbreakable can it be when he obviously had some kind of feelings for Miranda? And the fact that if they really were reincarnations then him and Miranda were really meant to be after all which would just make his relationship with Hanna look like settling or wasting time until he gets to be with his real true love or something. Also I do completely agree with not bringing any of Ravenswood to Pretty Little Liars. It has nothing to do with being selfish it just doesn't fit. They should have wrapped it up on their own show.

Anyway... now the questions...

So were Miranda and Caleb reincarnations or just related to the original Caleb and Miranda?

If Miranda was reincarnated and Caleb was not then what makes that so? Like why do you guys think that or why have you come to that conclusion?

Why did Collins collect the hairs? What did that do?

Was Miranda alive or still dead at the end?

Was original Caleb alive again or still dead at the end?

What did Collins mean Miranda could come back? And how?

Why did Dillon end up dying at the end? He did everything he was asked. Is this to emphasize the idea that you can never really make an honest deal with the devil?

I think that's it. Any help is appreciated and sorry for asking question that have already been asked. I just wanted to ask them my own way so I can understand it better. Thanks again.