just some thoughts, perhaps some patreon will pass it further:
1. Once some costumes are used in events, to be also available in normal game (e.g. Roulette business suite in prison, prison costumes for henchwomen, yacht event dresses on main villains etc) and costumes from bordello (e.g. Batgirl's ripped suit).
2. Make ups and other elements to remain after stripping (e.g. Harley's glasses)
3. To have an option when stripping to keep stockings and pantyhose (e.g. Galateea's fishnet, stocking from business suits etc)
4. Not to wipe the cum of face after blowjobs (not as a permanent costume, but at least the rest of the visit)
5. Clone the villains to permanently keep them in cells (Starfire should be a must)