But will it (and the back catalog of episodes) be available in the U.S. on Amazon Prime?

My hope for this is that they limit the episodes to a smaller number or do it as a special, especially since its being done by the Wandavision creators.

I liked parts of Wandavision, but it was just too stretched over the episode count to feel like the count was justified. Some filler and episodes feel like extracts from a larger piece made it harder to watch for me.

Ultimately, every episode should have a beginning, middle, and end even if that end is a minor change to the status quo. This tactic of "Here is an arbitrary end because this should've been a movie/fewer episodes" needs to go.

The answer is Twin Peaks.