I'm a game dev. What do yall want to see in this niche? Like, what are some pitches/ideas that you guys like.
I like themes of power, sexual prowess, and size mismatch. I wanna see the woman react to the dick with excitement, fear, overwhelm, curiosity, and desire. She should act almost like she's giving birth: eyes tearing up, heavy breathing, squirming, loud, almost funny groans and screams - not those fake pornstar ones, but honest guttural my-body-is-telling-me-no-but-I-am-telling-it-yes war cries. Basically what I'm saying is she should
not take it in stride.
Nice also if later there's another woman (it's porn, why not) and the first says to the second, "Yeah. Yeah I know. Now watch how I..."
Visually speaking, belly and throat bulges are great. If there's big dick, there should be balls to match. Cumflation is also criminally under-done. Don't ever think you're overdoing it; Kawahagitei has it right (on size, at least). Literal cum baths, cum on clothes (maybe even in public), cum on food, cum drinking (careful to keep it down, now)...
The MC should experience big dick problems outside of sex, too: normal pants won't have room for the balls and getting a chub might tear them. Masturbation requires a bathtub or a river. Randos keep asking the same stupid questions, won't let them go, and aren't prepared for the answers.