Invasion: Asgard
The troll invasion of Asgard seems guaranteed of success. They have Mjolnir, they've trapped Thor on Earth where he's moments away from reverting to Dr. Blake, and they have not only one as mighty as Thor on their side in the form of Ulik, but they also possess an enslaved being of tremendous power, Orikal, who provides them with not only prophecy, but high tech weaponry.
The backup feature is also quite exciting, with Thor and his companions venturing to the realms of the deities of Arabian and Indian myth.
This is may be low-brow stuff, but it is high-octane entertainment!