You can assign Ivy to Lex's room after you hire her, just like with all the other hireable villains. As for Superwoman, the costumes you just listed are her only cell outfits.
No, there has been no development of possibilities beyond a long-established pattern. Only new girls and scenes from the already known list.
Plus that would require gunsmoke to put some thought in to the story we all know that's not going to happen
SR7 has said pregnancy stuff would probably only be in a ending event.
That's the only way it would make sense to be honest (And it would also be a lot less work, and thus more feasible). Although it's still far away (If it even happens) it's fun to speculate about what types of endings the game could have.
As unrealistic as it is to expect the game to continue on forever you could always just have a "Go to this ending once X conditions are fulfilled" button in the office that would allow the game to have conclusions added while still being developed/having content added down the line. Like still having the ability to add more Yacht party equivalents, just after all the core plot threads have been resolved with Grodd and such.
If you mean in the course of the gameplay loop, yeah. But there's nothing that would prevent them from just having a all of the girls knocked up in an ending if you finished their plot etc. A "and later on, this happened" type thing to at least give the resolution.
Of course, the option with all of them in the form of one picture in the end is possible. But I mean the possibility of individual choice. For me, this is the most important/interesting.
