I disagree that nothing has been fixed. There have been four updates since release (if you are on the Insider program) and quite a bit has improved. Battery life, in particular, but also broken live tiles. Sure, there are still some issues (multiple live tiles for Outlook if you have more than one account seems to only update alerts for one live tile, for example), but there is a good Feedback app and things are getting fixed, albeit slowly.
What is Wi-Fi 5g?
I haven't done a lot with text to speech other than Cortana stuff, but it seems remarkably good.
Collapsing all the HERE/Nokia mapping apps into one app has definitely been a loss. A big loss.
There seems to be some hurdle with dual-SIM phones and Visual Voice Mail. Maybe something to do with the way VVM notifications are pushed to the phone, and not being able to tell which SIM the notification is for? I don't know. Seems like it could be easily solved, but probably it is hard-baked into AT&T's infrastructure or something. Anyone know if it works on dual-SIM Android phones?