yup, i feel a greater sense of visual feedback when using the pre-ios7 keyboard as well.
feedback is useful and important, and iOS7 overall still gives a general feeling of disconnect and disorientation where previous versions had a sense of immediacy.
That's the word I was looking for, thank you. Visual feedback. There is none of it. There is none of that "I touched a button" feeling. Instead, there's a feeling of disconnect between what you're tapping and how it's responding to you, and I think it's that disconnect that makes me feel "stressed" when I'm using iOS 7, because my mind has to work extra hard to pay attention on whether the device is responding to me, and when I come across the iOS 6 keyboard, I feel so much relief because there's visual feedback everywhere.
I think Apple underestimated just how much "skeu" plays into visual feedback, that it wasn't just all gloss and shine, there was reason behind all of those textures.