Other than mod stuff, how about the following?
- A dickgirl bottom option for Lucy and a pussy option for any other bottom, maybe even futa (i.e. both cock AND pussy, and of course having balls here like a civilized game) for any girl
- The bottom's face being shown as they're being fucked silly
- Threesome options with a middle (even self-3somes)
- More girls (Lucy's amazing, but she's the only girl unfortunately), maybe friends' OCs
- An anon like in the page art, either a guy or girl or even nonbinary with variable genitals, as a playable character
- Outfit options, some sexy and/or silly
- An option for the bottom to be laying belly-down and/or the top to be at the physical bottom, allowing for the bottom's cock, where applicable, to be sticking up in the air and visibly cumming
- Some kind of achievement-based bonus, like city background bystanders being playable