This will be my last post regarding this issue because I don't feel comfortable to derail from the OP too much.
So you and I both agree there is trade off between edge/speed/ice coverage and position. Yet you seem to assume had Mao paid less attention to position she would have acquired Yuna level edge/speed/ice coverage whereas vice versa is not true.
Let me show you something. Here are fancams of Yuna and Mao from same competition from same seat that shows the whole rink.(I chose these videos because they were the only videos I could find on Youtube that meets the conditions. It's kind of hard to find fancams of Mao.) Both are doing change of edge spirals. Yuna holds hers for about 12 sec, and Mao about 10 sec.
Yuna's change of edge spirals from 2008 GPF SP
Mao's change of edge spirals from 2008 GPF SP
Now, using the logos on the ice as a reference point, we can see Yuna covers twice as much ice both in length and width as Mao.
Twice. It's not just a little better as you seem to think. And it didn't happen often. It was
always the case when it comes to their spirals. Yes Mao had superior positions, but Yuna had superior speed and coverage, which is possible by deeper edging and control on spirals. It's also a skill itself that you seem to very underappreciate for some reason.
Had Mao sacrificed her positions, would she have become twice faster and covered twice much ice? You don't know that. And I doubt that. Feel free to check other videos that Youtuber uploaded from that competition. Nobody comes even close to Yuna's ice coverage in spirals. (Maybe Carolina? Hard to tell 'coz hers was zoomed in.)
When you watch on TV, speed doesn't transfer as well as positions because the camera keeps focusing on you and move with you. You can't really feel how fast or how much ice someone is covering. In that sense, Yuna was in disadvantage. It makes me very sad when people casually say Yuna's spirals weren't great because they were great.