Pro: As someone who's used C# for almost 19 years, this is a holy grail. I've always found in-browser development far behind native desktop / mobile development

Pro: As someone who's used C# for almost 19 years, this is a holy grail. I've always found in-browser development far behind native desktop / mobile development. Con: The calculator demo takes waaaaaay too long to load. The long load time might be acceptable for a very rich web application.