I don’t think using the Well of Wonders plot device as a loophole for reviving Neal or any other dead characters on the parent show is a good idea. Anastasia was an exception, not the norm, and even then it comes off as “way to break the dead is dead rule.” Not to mention it wouldn’t make sense or be fair to randomly bring a concept that one needs to watch WL to understand over to the parent show. Hypothetically, had the laws of magic remained broken, Once viewers would need to watch WL to understand how that happened and they’ve stated before that they want the two shows to remain their own things. And once you break those rules for good, that throws away so much of the stakes right out of the window. “Oh we don’t need to worry about a character dying now. They can just be resurrected.” Yes death for characters can be tough to deal with, but it is a very natural risk these characters have to face. You take away much of the danger if you offer all of these ways for character resurrection. It is also messing with fate, which was something Nyx brought up. Nyx stated that Amara’s time was up and she wasn’t supposed to remain alive. Neal’s death was a price for bringing back Rumple, and therefore Nyx would likely argue that his fate has been sealed. You need to have deaths that stick for a variety of reasons.