I feel like at this point, Yuvika is just not playing deliberately. She doens't care about winning the show. I think her main aim is to restart her career by getting some exposure through coming in BB -- much like Vikas.
Diggy and Aman are definitely playing it safe. But Aman has gotten into a few spats so he's a little more open. Diggy is just not even there.
Right now, Keith is playing it way too safe, to the point where I'm starting to get annoyed with him. He NEEDS to take some stands or something.