I don’t know, other than her crit buff I don’t see much usefulness unless they really go crazy with buffing her damage. Seems like she would fit best on a cleave team, but even there I’m not seeing why you would use her. She absolutely has to kill someone with S3->S2 or she won’t be helpful, and it seems like she is only going to be able to tap glass cannons and less tanky bruisers. Her def break will then only work of enemy team doesn’t have immunity, or you had a stripper go first. And in order for any of this to work she has to have decently high effectiveness as well as getting past 2-3 innate 15% resists.
Seeing as how she isn’t killing tanky units, the unit she kills is actually kinda pointless since your cleaver would have killed them. Since you need a stripper anyways, why not just bring an aoe defense debuffers in Tywin or Tene? Tene also sleeps which can make up for not having the extra crit buff.
The only real benefit I see is that her aoe def break is element neutral