I haven't seen much discussion here. This lens fascinates me, as I've always had one "do it all" lens, and it comes in super handy on vacation trips and situations where a broad FL range is quickly needed. I've always had such a lens with my Nikon systems, and that type of lens became the workhorse.
I don't expect perfection, but certainly stopped down a bit should solve the most glaring issues. The Nikon versions were great as long as the maximum FL was avoided. I've taken some great shots over the years.
I expect more of the same, and better, from Sony. My one wish is NO lens drift, where the lens zooms out when pointed down. This is often an issue with a broad range, external zoom.