Max_Rebo said:
One of my biggest problems is several populated worlds are destroyed, Leia feels it through the force, so you’ve got to assume Luke felt it, yet he does nothing, just stays on his island waiting for someone to solve his map puzzle. I would hope that might bring him to his senses and make him take action, but maybe he was too far away to feel it through the force?

He probably felt it. But then again he was hiding from the war so it seems unlikely that it that would prompt him to leave. It’s hard to tell what was up with the whole map thing, but I don’t think he really wished to be found.

There was some talk about Imperial maps, so it might be that Sydows character somehow solved where the temple was based on these maps?

Max_Rebo said:
What happened to the poison gas? I may have missed it but I don’t remember anyone re-fixing the poison gas leak.

Well, Finn asked Rey if she could un-fix it and use it as a trap, so it was definitely fixed at some point.

Max_Rebo said:
Hyperdrive now seems to be instantaneous to get anywhere, or maybe they just didn’t travel very far, there were no travelling scenes, just felt wrong. But it’s hard to know how far they travelled as we are never told where Jakku is in relation to anything else.

That bothered me as well. But then again SW has never been very consistent about the length of hyperspace travel. But, I think the planets in the film are fairly close, so that might be the explanation.

EDIT: It kind of depends on what you call close.
http://www.aceshowbiz.com/images/news/news-00091614-star-wars-galaxy-map.jpg

Max_Rebo said:
Why did Captain Phasma have authority to drop the shields for the whole planet, and why did nobody notice that it had happened?

Well, it wasn’t the entire planet. Just the oscillator thingy that was a weak spot. They essentially removed the shield covering the Starkiller equivalent of the exhaust port in ANH.