The problem with .NET Core is that while the runtime is truly multiplatform, the development experience is not.
The performance improvements on each release are trully impressive, but I think at this point the focus should go towards a better development experience.
Developing on VS Code is such a hurdle thanks to the Omnisharp language server that constantly crashes, and the project does not seems to be among MS top priorities for .NET platform.
Restarting the IDE every few minutes is very frustrating and hardly justifiable from a productivity point of view.