Sonia has her good moments where she comes up with something clever or says something legit funny. But there are some dodgy moments too. The eviction interviews are terrible but I don't know if that's her fault or the producing. Let her ask a question and give them time for a proper answer, not just a single sentence before you interrupt and throw to another video package.
So I wouldn't necessarily call for Sonia to be replaced, just improve the eviction interviews. Ask interesting questions and allow time to follow up their answers. I want to know about how the HMs think they've grown and changed in the house, which relationships were the most important to them etc, not just who they think will win blah blah blah.