The SonarQube team has improved their integration with the .NET ecosystem, specifically with MsBuild and Visual Studio, by introducing new rules and features such as SonarLint for Visual Studio and the Scanner for MsBuild. These improvements aim to provide a consistent user experience among their tools, including the deprecation of the SonarQube ReSharper plugin. The team has worked closely with Microsoft to achieve this goal, utilizing the Roslyn compiler platform and implementing over 173 C# rules in SonarLint for Visual Studio. Additionally, the SonarAnalyzer for C# is used as the underlying rule engine in both SonarLint for Visual Studio and the C# plugin, providing a consistent experience across their tools. The team has decided to focus on fewer but more valuable features, aiming to provide a more streamlined user experience with quick release cycles.