Originally Posted by Closerframe
I could see that. Thanos could also use Surtur as a distraction. Not that the two would actively work together, but Thanos is pretty smart, he'd find a way to use another threat to help him achieve his goal. Even with Loki on the inside, it would be very difficult for him to break into the Vault and make it past all the Asgardians, especially Thor, when the Gauntlet isn't powered yet.