Good list.

- Value types is a huge one to add if we're looking at what is actually in the wild.

- Scopeless `using` declarations are nice for RAII like behavior.

- IMO C# builds are actually way way nicer than Java. Sln and .csproj files and nuget are actually a lot easier to deal with than javac/ant/mvn/Gradle. Maybe that's more a .NET thing than a C# feature.