Pan

[blackmage_nuke]

why was it set in WWII peter pan was written in 1911

Blackbeard said he gathered boys from all eras or something along those lines, I assume the timestream of neverland is not parallel to earth and they can travel to any point in earth time to take children from. He gathered Peter from WWII and Peter later went to 1911 to take Wendy, this explains how Blackbeard has access to a song that was not written during WWII and Neon Lights

why did blackbeard want to kill all fairies when he needed them to continue to make the fairy dust so he could live forever

He didn't that I can recall, but realistically he probably assumed he wouldnt be able to capture and enslave them, and I assumed the entire cavern was made of crystalised fairy dust, since small dregs have been keeping him alive for so long I assume that amount of fairy dust will last him for at least a million years.

why was he concerned with living forever when he lives in neverland

In this version of the story people probably age in Neverland unless they use Fairy Dust, Hook aged (I assume he was kidnapped by blackbeard at a young age) and I actually think it's a pretty reasonable explanation. I havent read the original play but I don't think its ever explicitly stated Neverland automatically gives you the power to not grow up, only Peter has this power.

why did the fairies sound like that when they should sound like bells that's the whole reason tinkerbell was named as such

You got me there, cave acoustics?

why did all the pirate ships fly

Maybe, Fairy Dust? It might be a calculated economic risk to spend fairy dust to collect more boys to collect more fairy dust. Also some of the miners probably die and have to be replaced so the use of fairy dust to attain more seams reasonable.

why were hook and tiger lily in love

No idea, maybe this is a set up for why Hook would later hate Peter. Unless you mean why as in why would those two ever like each other in which case probably because Hook hasnt seen a woman since he was a kid and since Tiger Lily likes bad boys.

at the end hook was all "what could possibly happen between us" WELL WHAT HAPPENED there is literally no way to reconcile what happened in this movie with the actual story so plz help me out here movie

Probably building up for a sequel that wont happen though I agree this shouldve been a movie about how Hook and Pan became enemies as all accounts from the original story are vague and there was a lot of room to work with.