how high does it need to be? as wont at 100,they wont pop up enough?
The good news is that you don't need a good reputation (even if they hate you you can still fuck them), you don't need to be a top or dominant, you don't need your skills higher than 10, your battle experience more than beginner and your sexual experience more than skilled. The bad news is that I don't know what you need, sorry! I'll write down if I can find what triggers it.
Edit: Are you playing as a male or female?
Yeah but I think dominant scenes for female players exists only if it exist the corresponding scenes for dominant bottom male players, basically changing asshole with pussy but with the same structure. Given that you can't ride the muscular bandit in a dominant bottom way as a male, you can't ride the musculare bandit in a dominant way as a female
Both, your flirting "attack" change if you're dom or sub (usually for males if you're dom you show your cock, if sub your ass) but in some cases the sex ending scene change if you're dom or sub (for example if you're a sub male and you dominate the female bandit, she rides you, while if you're a dom male and you dominate her, you can receive a blowjob or finger her). Sometimes the "attacks" and the scene depend on your top/bottom characteristics instead of dom/sub