Even though CLI improved with .net core 2.0, am I the only person feeling Interactive F# is missing? I know on Mono its fsharpi, but does .net core even has an equivalent ?
We haven't completed F# Interactive work for .NET Core yet. There are some big technical problems to solve there, and it's our top priority after we complete full support for the new project types in Visual Studio. Not timeline yet, but a workaround is to use fsharpi (from Mono) on unix or fsi.exe on Windows. Both use the same compiler that you get with .NET Core.