I'm feeling like Alaska doesn't really want to be there so much as feels like she has to be there. I loved her in her season, this year, I forget she's even there half the time.
Not a big Alyssa fan, but I'll give her credit for bucking the "we all agreed" mantra, because, at least from what we saw, they didn't all agree. Tatianna was the one saying they don't always agree with the judges critiques, so it's not fair to base everything on them, and we saw th's from others speculating about alliances and things changing. Sticking to that standard best serves the middle of the pack types, and those seemed to be the ones most in favor of it. It's a risky plan, anyway. They know the audience doesn't see the full critiques, so it leaves them wide open for a bad edit.
My biggest issue with the Diana thing is there really wasn't a lot to work with. Evita's "iconic" moment is standing still at a mic, but she got to move around the stage, so why couldn't Diana? And the lyrics weren't much help. All the other roles had props, some of them multiple. Diana's job was to stand center stage, drop a tiara, and do a little bump and grind in place. Even if she had gone ott with the dress, she still would've been standing center stage in a dress with big sleeves. When she was backup, it was a lot of choreography with her back to the stage or out of frame, and a few moments where she had a chance to ham it up (which Katya did). No matter who ended up with that part, they were destined for the bottom unless they pulled out some Raja-level runway.
They could've done so much more with someone else, Margaret Thatcher, Amelia Earhart, Marilyn Monroe.