What if the Order had murdered the Linear Guild

[Lacuna Caster]

Even because for most of these, indeed, the Gods don't even need to be prophetic, just to communicate after a good scrying.

Yes, exactly.

According to Heimdall they voted to "let the mortals patch this on their own" last time so they probably are not allowed to interfere any more than what they did.

If Odin can find some weasel-wording for his prophecy that doesn't technically violate their mutual non-aggression pact, I suspect the Twelve could figure something out.

I'm also not clear on why a mutual non-aggression pact would apply to Team Evil, who by all appearances are either threatening all the Gods simultaneously or enough of them that the Dark One would be badly outnumbered. It's one thing to say that the Cosmic Game must have rules, it's quite another when some of the playing-pieces are trying to burn down the house with all the players inside.