Another small similarity I noticed. Emerald & Mercury are not only reflections of Cinder's childhood self but she also took up the parental role for the both of them and even refers to them as her children. While Jaune's story has him taking care of kids in Atlas and learning not to be a helicopter parent with the paper people. The story highlights both their flaws in dealing with their metaphorical children. Am I crazy? Because it kinda feels like the show is setting them up to be parents.
I have made the case before for them having children on a few different occasions, but not with this specific evidence. (I don't usually bring it up because I feel like this end of the fandom, and fandom in general, gets a bit touchy around it - including me honestly, because I've had some real misogynistic freaks message me about it). Thanks for your ask though, because you've made a good point here. I don't think you're crazy.
I have separately discussed the false mother role Cinder took on with Emerald (I can't recall her referring to them as her children, do you have an episode citation for that? I'm going to assume that was in an earlier volume) but I never considered it in the context of actual children lol. The separate thing with Jaune and kids is very weird (and I am sincerely surprised that they actually did genuine helicopter parenting characterisation with the Paper Pleasers).
The thing you have to remember (and I have to remember) is that this isn't really just there for fluff - as joyful as that can be - but it is genuinely thematically motivated. I have elaborated on this topic in the past a few times, but Ozlem lost their children. There's an ongoing idea of creators/creations and how to control them (or not control them) and let them grow (literal garden metaphor here). Ozma saw his lost daughters in the Maidens; Salem literally went and got an all-in-one daughter (Maiden vessel) replacement. Salem as a bearer of life who killed her children is something very deeply symbolically twisted (this is why Medea is so notable) basically asking to be redeemed.
Note that Ozpin controlling the Maidens - specifically trying to control the transfer with priming Pyrrha for Maiden candidacy, and Ironwood likewise emulating this process - is categorically a bad thing. Those sequences where Cinder stops this happening is a twisted good thing (even if her motivation happens to not be altruistic, but this is why calculatedly I think reforming her attitude towards the Maiden powers makes sense because she's already demonstrated, to some degree, this idea. Take that idea a little further...)
Recall that Jaune took on the role of the Old Man in the Four Maidens fairytale. Jaune is repeatedly connected to Maidens or would-be Maidens in pretty significant ways given that he's not a possible candidate - like, seriously significant, given that he was taken down to the Vault where Amber was and the whole thing with Pyrrha, then Penny, and his enmity with Cinder. The only other Maiden he hasn't had much to do with is Raven, but given Raven may at some point make a return, there's no saying what could happen. So, that he's got this direct relation to Ozma (when he's an old man) is pretty telling because we're being told to directly think about the way Ozma related to his daughters... contrast against Cinder with her Dark Curse - like Salem's own Grimm poolification - and the Ozlem of it all starts getting weird pretty quickly.
But it's such an enduring idea in the show (Ruby's mother wound is a whole thing in her Heroine's Journey) that it's no surprise it's come up over and over. Evil stepmothers and fairy godmothers and growing up and disillusionment with the parent figure are fundamental to these sorts of stories, lol. You can read redemption of a character like Emerald or Winter as escaping arrested development encouraged by various figures in their stories. So if you were to, say, write a character escaping arrested development from their evil stepmother/fairy godmother, 'growing up' and making her own actual family when she's never had any at all is a pretty organic way to convey that entry into adulthood. I don't think this is going to be true for every character, but if they've specificallllyyyyyyyyy done this in a particular way with Jaune and Cinder, it's very weird.
I don't know what else they'd do the dad characterisation with Jaune specifically for once it's moved past a joke into serious thematic territory. Similarly with Cinder I initially always wrote it off as merely Cinder emulating her stepmothers; I would never expect them to follow through on that in a serious way. But in R/WBY, it's not like children were a wayside issue for Raven and Summer; that actually has a significant plot impact (as well as character) on their stories. If there's one show where I wouldn't expect mothers to become nonentities, admittedly R/WBY might be one of them which I'd point to.
I'm still not totally sold on the idea of it happening in canon - like yeah, would it be the epilogue treatment? Is that what full Ozlem resolution looks like? It does work thematically, it does work storywise and for what their characters need/want (either for Cinder with no family or Jaune with a family name which has hurt him, so what can he do to self-determine lol) and yeah, there is some particularly... interesting characterisation. Of course your average detractor would say, 'But she's evillllll' like come on, think for a minute about full character development and transformation and like, life which comes from death. Eyeroll. (Yeah, ironically redeeming the pretend mother role she took on with her acolytes is pretty good... I didn't think of that before).
Let me put it this way: I'm not looking to form-fit a married-with-kids ending for any given female character. I'm only really interested in it if it makes narrative sense. It is very peculiar how it redeems Ozlem in an actual reverse/literal way (this is the specific point I made the case on) and how with what you've laid out here it is actually supported with given characterisation. I wouldn't say this is the case for every character at all.
I'm trying to think of counterpoints, and if you read it specifically in the context of Ozlem (because this is where it's doing so much work) it's hard to read Jaune's characterisation in response to a different character. It really only works if it's Cinder in this case. The counterpoint would be that Jaune answers Weiss' need to continue on the Schnee legacy, but we don't really have much in that direction, and to be totally frank, very little of Weiss' character suggests 'continuing the Schnee legacy', or redeeming it, necessarily involves children. It depends whether they positively answer Jaune's whole identity Arc Huntsman thing or they affirm that actually he was meant to be tied to that and kill himself with expectations or whatever. My problem is that like, the ostensibly bad Huntsman who is romantically tied to Cinder (famously failed by a really bad Huntsman) is the most dramatic and wonderful narrative development possible.
I'm attempting to entertain different perspectives here but yeah I didn't expect to get serious textual justification for Jaune and Cinder having babies. Definitely not on my bingo, and definitely not Jaune characterisation in V9 I'd ever dream of getting canonically.
Basically they need to have sex.
