The gauntlet to me seemed so ordinary. It’s supposed to have this magical power to show your enemies weaknesses and we kinda saw it do that with Rumple when he was trying to free Belle, but that also could have been a “placebo” to make others believe it had that power when really it didn’t.
I think if we ever visit Camelot for real, it would be a final season thing. Otherwise, Camelot and anything or anyone from there is a plot device to move the story forward. And that’s a shame because I know there could be an interesting angles and twists Adam and Eddy could potentially play with there.