If you look through comments they vary from great to poor, so there's that. I don't see the "awful" rendering but I don't think is that spectacular either, more like a solid lens with decent rendering; it could be just the gloomy weather though.
What i noticed with the 35mm 1.8 is that at infinity the corners did not look good. The F4 zoom did better at f4.... on shorter distance there was nothing to complain about.
Maybe it was only my sample..?
It has very good contrast and sharpness and the bokeh is fine, coatings are good and flare resistant.
What i think will be a strong point in the S-series lenses is that there is little focus breathing throughout the range and in combination with the proclaimed RAW-video it could be a winner for video.
It would be a good idea to update the firmware of the lenses/ camera in a way that focus by wire has less shortcomings.
For one stabilize the focus at a chosen point... add a feature to make manual focus lineair so a focus pull is possible.