Native TypeScript refactoring in 2017+
VS 2017 should support TypeScript refactoring out of the box or in an easily found extension.
Here are a few ideas:
I'd like to be able to do method/parameter renaming with VS 2017 without having to install R#.
automatically add import statements would also help a lot. TypeScript hero does this well https://marketplace.visualstudio.com/items?itemName=rbbit.typescript-hero
Real time TSLint.
I think it's cool, but too bad that that VS Code tools are better than VS 2017.
I use TypeScript more than C# these days and feel that it deserves VS tools.