Response to an unknown guest
Prequels. More lightsaber fights, adds more lore, and written better than sequels (except Episode 1).
I don't think they're going to bring anyone back from the dead, but I believe we will see them again in Volume 9. I think that Wonderland place might be Remnant's version of Heaven and that we'll see Penny, Summer, and Pyrrha.
No, Shaka Ti didn't deserve to die.