I'll give that a try. Here's an AV idea with something for almost everybody (which usually means nobody will be satisfied by the end result) that's surprisingly politically correct. I've stuck with all black guys, but some could look part Latino or caucasian, as long as they've got big enough cocks.
A group flies from Japan to USA on business, 4 men and 1 woman. The men stay together, and treat her like a subservient secretary instead of a coworker. They attend their important business conferences together in the day, then at night the men go out to strip clubs. Throughout the movie we are shown scenes of the men throwing their money at some stripper, laughing and drinking. By contrast, the woman stays in her hotel room.
Knock at the door. It's a large black man coming to replenish the refrigerator. They talk respectfully, then friendly. He offers to take her out for dinner when he gets off work. They go, come back to the room, and she invites him to stay and play. Sex scene 1.
Next day, business meetings, the men are a little off from their night out, and it begins to show in their conferences. However she begins to look like the more competent one. That night, they go clubbing again, wasting their money and brains. From her hotel room, she makes a call. The black guy shows up at the door. He offers to take her out, but she says no, you come in. They're kissing and he asks, since she's far from home, if she has any fantasies. Shyly, she admits she does have a fantasy--two black guys at once. He makes a call, a bigger black friend shows up. Sex scene 2 (while they guys are throwing money at more strippers).
Another day of business meetings, the men are worthless while she shines and impresses the Americans. Back to the hotel. While they go clubbing again, she makes a phone call from her room. Knock at the door. She opens and there's the black guy. She welcomes him, then he sweeps his arm toward the door and asks if she wants to see. He opens it, and 6 black guys enter. She goes down the line, examining, nodding and accepting each of them, except one guy who's obviously not as handsome or fit as the others. She politely turns him down.
Then she notices his pants--he's got a huge cock. So she offers him a consolation prize, dropping to her knees and giving him a blowjob. Sex scene 3 (while the guys are still tossing money at strippers, thinking they're having a great time!).
When the ugly fat black guy has cum, she walks him to the door and kisses him goodnight on the cheek. Then she turns to the guests she's accepted. They're all naked and erect, waiting on her. Sex scene 4--gangbang.
Next day, the American businessmen want her to stay and finish negotiations, while her shamed male coworkers get on a plane back to Japan. That night at the hotel, successful, she makes a phone call, then starts packing her luggage. Knock at the door. It's the huge-dicked ugly guy. She gives him a big hug. Sex scene 5.
They get nude and she starts slowly, unsure she can take his size, but wanting the challenge. She begins with intracural sex from a cowboy position. Frequently she stops and they try to see if it will fit. Not quite, so they do intracrural again from different positions, mixed with him giving oral sex to her. Finally she tells him to just do it--just fuck me! He starts working his cock into her, gently at first. But she urges him to not be gentle about it, but to force her to take it. He does, it hurts her at first, but she ends victorious and satisfied.
The final scene shows him asleep on her bed, while she has layed her head across his stomach like a pillow, her mouth absentmindedly mouthing and sucking at the tip of his now deflated penis--not like she wants another round of sex, but as if it was a baby pacifier she was falling to sleep with in her mouth.
