Idk man. Right now RIZIN is having trouble finding an audience. There was the typhoon to consider, but their last card was amazing on paper (and in reality), but it didn't garner ratings that were really much better than their previous cards, or at least not what they were looking for. It has been hinted that if they don't start getting some major ratings that Fuji TV might pull the plug, and without them they are likely to fold.
However... DAZN is huge in Japan. DAZN is adding org after org to their roster of content. DAZN is paying big bucks for streaming rights. RIZIN making a deal with DAZN may be inevitable, especially if Fuji TV decides they don't want to broadcast RIZIN events beyond this coming NYE. Factor in that Bellator and Coker have made it clear that they want to begin co-promoting events with RIZIN again, which, if both were streaming events on DAZN, would make a ton of sense for all three parties and make the inevitable DAZN/RIZIN deal even more inevitable. If RIZIN makes the deal with DAZN it would have probably another three years (with an option for five) to operate, at the least.
A women's 115 GP with the names you posted? Idk. With $1mil up for grabs, maybe. But it would be hard for RIZIN to lure in all or even some of the names you mentioned. And their deal is finding native stars. Rena is a failed attempt. Kana might have some star power, especially if she learns to strike and becomes more well rounded and keeps winning (she will need to be well rounded to be the best). RIZIN would want probably a few more local names in that pool, I'm sure. I just don't think they'd be able, nor really want, to lure Claudia and JJ and PVZ away from the UFC, and Lee won't be leaving ONE either. I'm sure if any if them were interested that they'd take them, I don't see them attempting to poach them from different orgs, especially en masse.
What RIZIN CAN do is what the previous Japanese orgs (and RIZIN, to a point) have been amazing at doing, finding NEW talent with a bright future. Japan knows talent. They find unknown fighters with talent, guys like Bibi Fernandes, who have the upside to become world class talent in the future. That is more their MO, and rather than attempt to bring in current, in their primes, name fighters, I believe they'd try to find prospects who are unknowns and make them into stars.
Could they find success and become a huge organization? It isn't outside the realm of possibility. But in order to put themselves in position to do that, they need to survive.
IMO, it hinges on DAZN and Fuji. If they can maintain deals with both, outlook is bright.