Ronda's gonna face who Ronda wants to face, I'd reckon... Toni v Ronda, while I hate the fact they brought her in, woulda been at least somewhat interesting because of Toni simply being Timeless and Ronda having a special aura (i.e. the character work woulda been interesting)...
I dunno if something was announced about it, but Ronda could've signed for 3-4 appearances and that's it. Heck... maybe they planned a Tag Team affair out of it anyways. Who's to say...
I said before I'm expecting Mercedes to come back and either getting immediately pushed as a face or she's getting a short, one month bullshit story to turn her face. The possibility of her substituting for Toni for a Ronda program AND making her a full-blown face is pretty high with this injury, if they have to use Ronda soon... but man, that would be the worst possible trash of a scenario, really, if you keep remember, well... I dunno... the last 18 months or so.
There is a good amount of talent you could give Rousey to work with and quite a few of those are in NEED of an actual high-profile storyline like that, to get some more credentials to their name. Heck... they just gave Mina the W over Marina on Dynamite and she was in that as a substitute. Put her on it. If you actually need to, let Mina bring someone else in and do it like that for now.
That being said... It fucking sucks to lose Toni for such a long time, BUT I'm already marking out by the thought of her return... if they can make it into a big surprise outta nowhere one, it would make whatever night it will go down for me.