So here's what happens to me when I hear clamoring for a ton of Thor love in ML:
1. Eyes glaze over
2. Eyes roll out of their sockets
3. Eyes roll down the natural slope of my apartment floor into a dusty corner
4. Takes me 15 minutes to locate and reclaim my eyeballs.
And here's my reasons why:
Of "the Big 3" that have been the centerpiece of Marvel movie trilogies, the Iron Man and Captain America franchises have FAR outperformed the Thor movie franchise at the box office. Thor's movies have been spaced much farther apart. Thor was MIA from the Civil War movie, meaning he's been much less focal than basically any other Avenger now, since his last significant appearance was Age of Ultron. Lack of box office momentum for Thor means he won't be getting a dedicated three waves.
Design-wise, a lot of the characters you've listed, particularly the Asgardian warriors, are not central to anything in the Marvel Universe BUT Thor's world, and even in the movies, they were 3rd tier supporting characters who were less focal and developed than the human supporting characters. Doing waves with Fandral, Hogun, Volstagg, Heimdall, Balder, and Sif as centerpieces will look more like a Lord of the Rings toy line than Marvel Legends. They all will require a lot more dedicated sculpts, new tooling, and generally require more plastic for there larger size as Asgardians. They'll need new pouches, and belts, and swords, and sheaths, and chain mail, and helmets, and big boots, and loincloths, and axes, and I betcha that's a lot of plastic to sell at clearance prices when they all look interchangeable and start to rot on the pegs. There are too many movie characters that would eat up the budget needing dedicated sculpts, that will have less chance of a reuse, in order to get the wave to market in the first place. And I'll pay for the psychiatric care for anyone who thinks there's a snowball's chance in H-E-Double-Hockey-Sticks that there would ever be both movie and comic versions released of all of the characters named in this paragraph.
Take note, none of my reasoning states that I don't like Thor or Asgard.
I think we can generously expect 2 waves. I think we'd see a lot of Thor variations, since he's the "money" character. Not considering movie figures, I'd say chances are strong for:
Classic Thor (remake)
Modern Thor (unworthy?)
Jane Foster Thor
Eric Masterson Thor / Thunderstrike
Beta Ray Bill
Arkon (he looks Asgardian, that's about all I'd say for his chances, and I would have lumped Thundra into this category as well)
Skurge the Executioner
And Gilgamesh the Forgotten One (which I consider a stretch also)
But all of these are godly, imposing characters, or characters that read like Thor in a plastic bubble package, and still look like they come from comic books. I don't even see Black Knight fitting into this group and I love Black Knight and think he needs a remake. He'll probably come back around for an Avengers: Infinity War wave. You MIGHT get Sif, and I only think she stands a stronger chance because she's a female. Girl power, and all that.
No shade to Thor or Asgard, but I just don't see Hasbro investing all that much.