As a primarily native-client dev who has developed for most major desktop and mobile platforms, I hope MS achieves it's goal of .NET being a truly solid cross-platform option, but in a way that enables clean and efficient native-code interop.

Having used C++, some insane hand-rolled solutions, PhoneGap/Cordova, Unity, and now Kotlin MPP, I know that the "cross-platform" dream is messy and fraught with disaster, but I've come to really appreciate C# and .NET for day-to-day client dev.