I hope Microsoft improves the Telemetry tools inside Windows 10 to better catch the bugs, so that if a bug happens somewhere, even if the user don't report it, the Telemetry and diagnostics tools in the Windows 10 catch it and report it to back Microsoft.

I also hope they make a small team to work on real hardware with Windows 10, instead of virtualized ones, to prevent driver issues that people experience time to time after a new Windows 10 build ships broadly to everyone.