I actually like the NGG idea, I think stuff like that makes the world more vivid and gives the player opportunities to engage with it without necessarily being an omegaslut that fucks anything that moves. What people actually asked for (the deeper simulation) is bound to take some time to actually do semi-well, so I think everyone should be patient in the meantime, and temper their expectations of what can be added while she's also working on that. When she adds pregnancy, you can expect that to take more time to implement as well.
But also, I think CoT has a serious issue with grind (it seems that unless you are having sex on every opportunity, you are mostly grinding through the week towards friday, and now thursday, for some more reliable events involving some minimal actual gameplay and narrative structure), and you can't actually tackle this by simply deepening existing systems (though don't get me wrong, I of course also want to see that and think that's worthwhile). You need to actually add more thematically satisfying vectors of engagement with the world. More events, more things happening that you can take part in.
Personally, I'd very much like the author to add MORE challenges you can take part in. For two cursory examples, off the top of my head, having to masturbate at least once or more a day, having to have sex daily, or give ample blowjobs etc. Many of these could be tied into existing systems like the Ds relationships -which in any case should be expanded, so that the dom N/PC is able to exercise more control over the sub character. All that would be fun, because it takes the existing sexual content and puts it in a narrative structure. And as you may realize, what people actually find arousing isn't the paltry description of a dick sliding in and out of your mouth, it *is* the narrative context where it makes sense for your character to do this.