I mean, Wagner's FS at Worlds was an improvement over GPF and Nationals - but still not at the level she was at during the GP. (With a repeat of TEB FS she would have medaled...) Wagner has always peaked earlier in the season before tapering off, usually at Nationals (which is why she would miss the Olympic / World team several times)...she needs to pace her training better so she peaks later on.
It was a good thing Gold went to 4CCs...looks like she got the remaining rough showings out of her system before worlds.
It remains to be seen whether Wagner can remain healthy for the Olympic season...but honestly, she will need to up the ante (this would increase risk of injury, of course, but it's a necessary evil) to remain competitive even nationally. Gold will outjump her, and you've skaters like Hicks knocking on the door. If you don't adapt, you'll get left behind- unless, of course, your name is Yuna Kim (and it certainly isn't for any of the Americans...)
Oh yeah, I should point out that some folks wanted C Gao to go to Worlds after seeing Gold at 4CC...well, she wouldn't have finished 6th, that's for sure...she'd probably be closer to 10th, similar to how the Russian kids did.