That would actually be a really smart move on their part. I feel like they will probably just add Misaki though. I love Misaki, but it just seems like she doesn’t make as much sense in DOA6 as Sayuri, Kanna, or even Tamaki to an extent.
Sayuri seems like she would have a strong bond with Helena and would be intimated by Lisa. Kanna could have a friendly rivalry with NyoTengu. Tamaki and Tina seem like like they could be new rivals since Tamaki used to be a model and they both seem to share that strong, superstar personality type.
I would rather have Misaki and Luna over Monica and Fiona. Those two seem to just be characters for a gravure game. They’re pretty, but I find them to be the least believable for competing in DOA6.
Eh, I'm not entirely sure if Sayuri even KNOWS any of the fighting cast (of course, then again, I haven't really gotten an opportunity to actually translate her event episodes, so I might be mistaken), so I'm not entirely sure if Sayuri would work for that reason alone (let's not forget, thanks to DOA6 completely screwing up Honoka and Marie Rose's friendship regarding when they started becoming friends, it's implied DOAXVV takes place AFTER DOA6). At least Kanna and Tamaki were established to have prior history with at least one of the mainline fighters, and even Misaki and Monica were implied to have previously interacted with Zack. And yeah, Tamaki being included would actually make for a very nice continuity nod if they have her interact with Tina (especially given Tina's former status as a model). I'm not sure Tamaki had any superstar elements to her, though, since modeling was the only real profession she had besides wardrobe stuff.
Speaking of Misaki, I'll probably tolerate her inclusion despite it possibly contradicting timeline stuff regarding the mainline girls under one condition only: If she's in the game, she'd BETTER be the reason why the mainline girls decide to head over to the Venus Islands in Venus Vacation. That's the ONLY reason I'll accept her (well, technically, I'm willing to accept her or any of the girls, but thanks to DOA6's continuity screwup with Honoka and Marie Rose, among other things, I'm forced to limit the girls to just Tamaki and Kanna due to those girls actually having prior connections to the fighting girls that actually are in DOAXVV). I've practically given up on Luna thanks largely to the continuity hiccups of DOA6, especially when none of the girls even KNEW Luna before DOAXVV (at most, she'll have to wait until DOA7, if we ever get that game anyway).
As far as Monica and Fiona, to be fair, Monica actually seems to be familiar with Zack (she mentioned a sunglasses-wearing smiling man basically telling her upon winning loads of poker chips that casinos are where people's dreams come true, which evidently had a tremendous impact on Monica's later career decision), so she could actually get in to DOA6 for that reason. And for Fiona, eh, if Lisa Hamilton could get in to the fighting roster and, heck, even become a key member of DOATEC despite it technically not making any sense at all (it's extremely unlikely that she would have fallen for Zack's hoax about a new tournament on Zack Island in the first place due to her being fairly high up in DOATEC's ranks, being one of its chief researchers. At least with Helena, you could argue that her technical status as a puppet CEO at the time kept her in the dark), I'm pretty sure Fiona could get in.
Sayuri is so pretty! I would love to have her on the console version of DOAX3, but alas I think they are done supporting DOAX3.
I would love to have Sayuri or Kanna in DOA6 because of their roles. Sayuri could be applying for the nurse role for DOATEC or MIST as far as the main series is concerned. Kanna, being an oni, honestly makes more sense in the main game than in the gravure game. Haha
Wait, didn't they have updates for DOAX3 this past October or something? I'm not entirely sure they're done yet.
As far as Sayuri or Kanna in DOA6, Kanna I can buy getting in due to her past connection to Nyotengu. Sayuri... like I said, unless she's had past interactions with one of the mainline fighters pre-debut, whether it be one of the fighting girls actually included in DOAXVV or, heck, even Zack, I don't buy her being included (mostly because DOA6 already screwed up continuity with having Marie Rose and Honoka meeting for the first time ever in DOA6, despite being established since the latter's debut in DOA5LR to be BFFs since at least the fifth tournament, among other things).
Idk if Sayuri will be the girl in DOA6 but if she is, that would be the perfect opportunity for TN to release the Nurse DLC in a revival pack and have it drop when she debuts but idk xD I think Sayuri would make the most sense to include since she's 24 and not a loli but she's still cute and shorter in stature so she's a good compromise of what western and Japanese players want imo. They'd just have to give her a redesigned nurse costume over her VV one so it's more battle oriented
If she has any past connections to either the fighting girls in DOAXVV or Zack, then sure, they can add her in. Otherwise, I wouldn't even bother with her inclusion in DOA6 even though I REALLY want her and the other girls to get in (their screwing up Honoka and Marie Rose's interactions in DOA6, and to a lesser extent Nyotengu's interactions with Ayane and Ryu Hayabusa's interactions alone pretty much destroyed any chance of any DOAXVV girl appearing unless they have a direct connection to one of the fighting girls or even Zack).