If you’re only a casual fan of the movies made from Marvel comics in the past four or so years, you might not be familiar with the “phases” that the company is moving through as it brings its complex universe to the big screen.

Phase 1, as dubbed by Marvel, began in 2008 with “Iron Man,” moving through solo adventures for the Hulk, Thor and Captain America and culminating in last summer’s “The Avengers.”

“Iron Man 3” kicks off Phase 2 this May, with “Thor: The Dark World,” “Captain America: The Winter Soldier” and “Guardians of the Galaxy” to follow, and Marvel films honcho Kevin Feige has indicated that series will sew the seeds for the “Avengers” sequel in 2015, even if moviegoers don’t recognize those seeds at the time. (Talk about a crazy Easter egg hunting challenge!)

“Ant-Man” is already on the schedule for late 2015, a few months after the “Avengers” sequel, and would kick off Phase 3. Marvel films honcho Kevin Feige hinted recently that “Dr. Strange” might also follow in Phase 3.

Remember that Hawkeye was introduced in “Thor,” so it’s possible we’ll see more Marvel characters introduced in Phase 2.

But here’s what we want to see in Phase 3:

Diversity. Luke Cage and the Black Panther are two longtime Avengers who would not only be great additions to the team but bring needed color to the movie line-up.

Women, including Wasp! She was a founding member of the Avengers, for pete’s sake. It would make sense that she’s introduced in the “Ant-Man” movie.

More Hulk. Even better, a Hulk/Iron Man Marvel Superhero Team-Up.

Big and small. A good mix of personal, high-stakes stories – which “Iron Man 3” appears to be, as much as any Marvel superhero movie can be – with the grand-scale action plots we know from Marvel.

Dare I say it: Crossover with characters whose big-screen rights are owned by other companies, namely “Fantastic Four,” “X-Men” and “Spider-Man.” Surely with lots of money to be made this can be worked out, right?

Come on, Marvel. Make it happen!