Throw 3flip
is her thing though, she's landed dozens of beautiful throw 3flips with Robin throughout her career (and trained them with Bruno, there's a video of their Elvis SP in 2014 and it includes a two-footed throw 3flip
https://youtu.be/eekVui48BlU) and the base value of the 3flip is a full point higher than the 3salchow.
They were 2nd at Worlds by less than 2 points, and she has shown in the past to be capable of a +3 worthy throw 3flip, which is worth virtually the same as a two footed 4salchow with -2 GOE. Plus the components are higher with a cleaner throw, to me it's an obvious place where they can pick up additional marks. (Plus the 3T step 3T sequence). Technically it's a safer bet to get 6-7 points on a clean throw 3flip than rolling the dice on a quad (which isn't realistic for them to land at the Olys, they haven't been doing it in competition and it's too risky for a re-injury IMO). Bruno throws her so (too) high, he just needs to tone it down a bit and I'm sure they could have a clean throw 3flip pretty easily.
The quad twist would only be beneficial if they still have the +3 GOE of the triple, if it's only a +1 or sloppy in any way it's really not worth it to compete IMO. But it's totally doable for them, safer, and I'd like to see them at least train it as a possibility. With a +3 on a 4twist they can gain an addition 2-2.5 points in TES.. wow I'm a nerd. But they have to be more math nerd, less kamikaze space cadet if they're going to make this OGM happen!!