I like it when they open up the Force to be something new and greater than we've understood previously. It's something timeless in the galaxy - perhaps even beyond - and the ways of the Jedi and Sith are only a limited understanding and use of it. Our understanding of the Force, as viewers, has been broadened by the Mortis trio, the Dagoyan mystics, the Sisters of Dathomir, the Lothal Temple & Loth Wolves, Episode 8 and more. To quote Luke, "It's so much bigger!"
Random thoughts:
Time seemed to pass at a similar rate inside the temple as outside. After discussing events that Ahsoka missed, debating the rescue of Kanan & tussling with the Emperor; Ezra returned to Lothal after Sabine's interrogation & rescue, and Ahsoka returned to Malachor after the explosion of the Sith temple and Vader had time to crawl back to the surface. She then continued down into the ruins, as we glimpsed at the end of Season 2.
I think Vader's confident that Ahsoka is dead, because she disappeared right at the moment of the temple explosion. Then he was swallowed by it, and presumably searched around a bit afterward.
Loth wolves seem to access hyperspace somehow, which is pretty trippy. I LOLed when the one wolf snatched Chopper.
I thought it was cool that the Emperor was accessing the Lothal temple in a similar ritual to how he connected to Yoda on Moriband at the end of Clone Wars. Apparently he could communicate with them & attack through the Force, but needed Ezra's knowledge in order to truly enter the time/space network there. It was also pretty neat that his energy/flame attack looked very much like the burst of energy that was released upon his death in ROTJ. Not sure what that means, but it was a nice touch.