It supports multiple windows.

Telemetry is opt-out. I personally don't care but I understand the concern.

Why would 50mb or even 500mb be a problem? So many people are concerned about memory and I don't understand. I never have memory issues and I seriously abuse my conputers, but RAM is cheap anyway. I'd much rather see development efforts be focused on great features than memory optimization. Features that will save much more time than a RAM upgrade costs.

I can't even begin to imagine why number of processes would matter to anyone.