What sucks is that I think there's no way for Saba to avoid the shitter collabs. Think about it, it'll happen before long for sure. She can only collab with Dooby and Nimi for so long before one of them brings along Doki or Mint or who knows what else.

She's also following oshispark already and they no doubt will offer her to get a concert like Dooby/Nimi are getting too, but that will have a few other vtubers in it as well which then means she'll be doing promotional collabs with them.
All in all I think we're guaranteed to see her collab with filfth before long.