I don't think the Adam-as-Michael idea came up until mid-way into Season 5. I think Jake Abel said something at one of the cons that he was surprised to be called back.
The show compared Dean to Michael way back in Season 2's Houses of the Holy, but there's no way they thought of the Dean being Michael's true vessel or him being Michael's sword back then.
"It'd be an interesting question to ask, though I'm not sure we'd ge a straight answer from them at this stage in the game."
I don't think we'd ever get a truthful answer from Kripke or anyone else. After some of what Kripke said at Comic Con (not spoilers), I don't think I want to read or hear anything he says again. I think I've been watching a different show than him.
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The show compared Dean to Michael way back in Season 2's Houses of the Holy, but there's no way they thought of the Dean being Michael's true vessel or him being Michael's sword back then.
"It'd be an interesting question to ask, though I'm not sure we'd ge a straight answer from them at this stage in the game."
I don't think we'd ever get a truthful answer from Kripke or anyone else. After some of what Kripke said at Comic Con (not spoilers), I don't think I want to read or hear anything he says again. I think I've been watching a different show than him.