So they don't use HERE data anymore? Are you sure about that? So on AU it's HERE, while on CU it's Bing Maps?
What I noticed first in my case is that searching for addresses doesn't work as before when offline, even though I have downloaded the map. Also the map is not being displayed nicely in my case. I will share some screenshots later when I'm on Wi-Fi, and when I see your screenshots. Some see it nicely, some don't. It looks with prettier for example than on my laptop on CU than on my phone with CU. But I have this issue with searching for streets and addresses when (completely) offline on both of my devices. Still, some say they don't have this issue with searching...
Also, navigation stops of you turn off the screen...
So my conclusion is, no matter if Maps look prettier or uglier, it's worse when we look at what's under the hood.
I have a Lumia 730 by the way. I got upgraded to CU by insider, and now I'm on production. (Though I may have to rejoin insider when another build comes if I want to get that build, since it's not officially supported phone for CU.)
Sent from mTalk on Windows 10 phone