I love most of the interface. There's still a few bugs that haven't been addressed, but it's 95% solidly done.

The telemetry capture is a huge issue for me and also no longer releasing the contents of updates. I've done what I can to limit or minimize how much information is collected, but I shouldn't have to do that.

When Microsoft released their metrics on Windows 10 usage (for example, how many times their Photos app had been used), people should've been absolutely livid. Who knows what else is captured besides the process list?

It's way too black box for me.